#
14c49dd0 |
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19-Sep-2023 |
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> |
dmaengine: imx-dma: Convert to platform remove callback returning void The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new() which already returns void. Eventually after all drivers are converted, .remove_new() is renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20230919133207.1400430-19-u.kleine-koenig@pengutronix.de Signed-off-by: Vinod Koul <vkoul@kernel.org>
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#
897500c7 |
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18-Jul-2023 |
Rob Herring <robh@kernel.org> |
dmaengine: Explicitly include correct DT includes The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230718143138.1066177-1-robh@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
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#
9f7d4718 |
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13-Mar-2023 |
Christophe JAILLET <christophe.jaillet@wanadoo.fr> |
dmaengine: imx-dma: Remove a redundant memset() call The desc->desc structure is already zeroed when 'desc' is kzalloc()'ed. There is no need to clear it twice. Remove the redundant memset(). Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Link: https://lore.kernel.org/r/95a81d623bffde2e5d14e22fad7e8c9a9a7203f6.1678743528.git.christophe.jaillet@wanadoo.fr Signed-off-by: Vinod Koul <vkoul@kernel.org>
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#
4b23603a |
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10-Nov-2022 |
Tudor Ambarus <tudor.ambarus@linaro.org> |
dmaengine: drivers: Use devm_platform_ioremap_resource() platform_get_resource() and devm_ioremap_resource() are wrapped up in the devm_platform_ioremap_resource() helper. Use the helper and get rid of the local variable for struct resource *. We now have a function call less. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com> Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com> Link: https://lore.kernel.org/r/20221110152528.7821-1-tudor.ambarus@microchip.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
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#
c3266ee1 |
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06-Jul-2022 |
Fabio Estevam <festevam@denx.de> |
dmaengine: imx-dma: Cast of_device_get_match_data() with (uintptr_t) Change the of_device_get_match_data() cast to (uintptr_t) to silence the following clang warning: drivers/dma/imx-dma.c:1048:20: warning: cast to smaller integer type 'enum imx_dma_type' from 'const void *' [-Wvoid-pointer-to-enum-cast] Reported-by: kernel test robot <lkp@intel.com> Fixes: 0ab785c894e6 ("dmaengine: imx-dma: Remove unused .id_table") Signed-off-by: Fabio Estevam <festevam@denx.de> Link: https://lore.kernel.org/r/20220706111327.940764-1-festevam@gmail.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
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#
c6547c2e |
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14-Apr-2022 |
Sascha Hauer <s.hauer@pengutronix.de> |
dmaengine: imx: Move header to include/dma/ The i.MX DMA drivers are device tree only, nothing in include/linux/platform_data/dma-imx.h has platform_data in it, so move the file to include/linux/dma/imx-dma.h. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-By: Vinod Koul <vkoul@kernel.org> Link: https://lore.kernel.org/r/20220414162249.3934543-10-s.hauer@pengutronix.de Signed-off-by: Mark Brown <broonie@kernel.org>
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#
dd861267 |
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29-Jul-2021 |
Juergen Borleis <jbe@pengutronix.de> |
dma: imx-dma: configure the generic DMA type to make it work Commit dea7a9f dmaengine: imx-dma: remove dma_slave_config direction usage changes the method from a "configuration when called" to an "configuration when used". Due to this, only the cyclic DMA type gets configured correctly, while the generic DMA type is left non-configured. Without this additional call, the struct imxdma_channel::word_size member is stuck at DMA_SLAVE_BUSWIDTH_UNDEFINED and imxdma_prep_slave_sg() always returns NULL. Signed-off-by: Juergen Borleis <jbe@pengutronix.de> Link: https://lore.kernel.org/r/20210729071821.9857-1-jbe@pengutronix.de Signed-off-by: Vinod Koul <vkoul@kernel.org>
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#
7199dded |
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29-Jul-2021 |
Juergen Borleis <jbe@pengutronix.de> |
dmaengine: imx-dma: configure the generic DMA type to make it work Commit dea7a9fbb009 ("dmaengine: imx-dma: remove dma_slave_config direction usage") changes the method from a "configuration when called" to an "configuration when used". Due to this, only the cyclic DMA type gets configured correctly, while the generic DMA type is left non-configured. Without this additional call, the struct imxdma_channel::word_size member is stuck at DMA_SLAVE_BUSWIDTH_UNDEFINED and imxdma_prep_slave_sg() always returns NULL. Signed-off-by: Juergen Borleis <jbe@pengutronix.de> Fixes: dea7a9fbb009 ("dmaengine: imx-dma: remove dma_slave_config direction usage") Link: https://lore.kernel.org/r/20210729071821.9857-1-jbe@pengutronix.de Signed-off-by: Vinod Koul <vkoul@kernel.org>
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#
0ab785c8 |
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24-Nov-2020 |
Fabio Estevam <festevam@gmail.com> |
dmaengine: imx-dma: Remove unused .id_table Since 5.10-rc1 i.MX is a devicetree-only platform, so simplify the code by removing the unused non-DT support. Signed-off-by: Fabio Estevam <festevam@gmail.com> Link: https://lore.kernel.org/r/20201124143405.2764-1-festevam@gmail.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
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#
cce010a5 |
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31-Aug-2020 |
Allen Pais <allen.lkml@gmail.com> |
dmaengine: imx-dma: convert tasklets to use new tasklet_setup() API In preparation for unconditionally passing the struct tasklet_struct pointer to all tasklet callbacks, switch to using the new tasklet_setup() and from_tasklet() to pass the tasklet pointer explicitly. Signed-off-by: Romain Perier <romain.perier@gmail.com> Signed-off-by: Allen Pais <allen.lkml@gmail.com> Link: https://lore.kernel.org/r/20200831103542.305571-9-allen.lkml@gmail.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
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#
18851192 |
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03-Sep-2020 |
Robin Murphy <robin.murphy@arm.com> |
dmaengine: imx-dma: Drop local dma_parms Since commit 9495b7e92f71 ("driver core: platform: Initialize dma_parms for platform devices"), struct platform_device already provides a dma_parms structure, so we can save allocating another one. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Link: https://lore.kernel.org/r/7fad3c60cac2bf4f8dab791f8b6eafae90abc960.1599164692.git.robin.murphy@arm.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
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#
df561f66 |
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23-Aug-2020 |
Gustavo A. R. Silva <gustavoars@kernel.org> |
treewide: Use fallthrough pseudo-keyword Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
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#
7f5d7425 |
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29-Jul-2019 |
Gustavo A. R. Silva <gustavo@embeddedor.com> |
dmaengine: imx-dma: Mark expected switch fall-through Mark switch cases where we are expecting to fall through. This patch fixes the following warning (Building: arm): drivers/dma/imx-dma.c: In function ‘imxdma_xfer_desc’: drivers/dma/imx-dma.c:542:6: warning: this statement may fall through [-Wimplicit-fallthrough=] if (slot == IMX_DMA_2D_SLOT_A) { ^ drivers/dma/imx-dma.c:559:2: note: here case IMXDMA_DESC_MEMCPY: ^~~~ Notice that, in this particular case, the code comment is modified in accordance with what GCC is expecting to find. Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Link: https://lore.kernel.org/r/20190729225221.GA24269@embeddedor Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
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#
341198ed |
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15-Jan-2019 |
Leonid Iziumtsev <leonid.iziumtsev@gmail.com> |
dmaengine: imx-dma: fix wrong callback invoke Once the "ld_queue" list is not empty, next descriptor will migrate into "ld_active" list. The "desc" variable will be overwritten during that transition. And later the dmaengine_desc_get_callback_invoke() will use it as an argument. As result we invoke wrong callback. That behaviour was in place since: commit fcaaba6c7136 ("dmaengine: imx-dma: fix callback path in tasklet"). But after commit 4cd13c21b207 ("softirq: Let ksoftirqd do its job") things got worse, since possible delay between tasklet_schedule() from DMA irq handler and actual tasklet function execution got bigger. And that gave more time for new DMA request to be submitted and to be put into "ld_queue" list. It has been noticed that DMA issue is causing problems for "mxc-mmc" driver. While stressing the system with heavy network traffic and writing/reading to/from sd card simultaneously the timeout may happen: 10013000.sdhci: mxcmci_watchdog: read time out (status = 0x30004900) That often lead to file system corruption. Signed-off-by: Leonid Iziumtsev <leonid.iziumtsev@gmail.com> Signed-off-by: Vinod Koul <vkoul@kernel.org> Cc: stable@vger.kernel.org
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#
452fd6dc |
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19-Jan-2019 |
Vinod Koul <vkoul@kernel.org> |
dmaengine: imx-dma: change return of 'imxdma_sg_next' to void The return value of function 'imxdma_sg_next' is not checked anywhere, so make it void return type. Signed-off-by: Vinod Koul <vkoul@kernel.org>
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#
da5035f3 |
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19-Jan-2019 |
Vinod Koul <vkoul@kernel.org> |
dmaengine: imx-dma: change variable 'now' type to size_t now is used to keep size and it is better to change the variable type to size_t Signed-off-by: Vinod Koul <vkoul@kernel.org>
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#
9227ab56 |
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09-Jan-2019 |
Anders Roxell <anders.roxell@linaro.org> |
dmaengine: imx-dma: fix warning comparison of distinct pointer types The warning got introduced by commit 930507c18304 ("arm64: add basic Kconfig symbols for i.MX8"). Since it got enabled for arm64. The warning haven't been seen before since size_t was 'unsigned int' when built on arm32. ../drivers/dma/imx-dma.c: In function ‘imxdma_sg_next’: ../include/linux/kernel.h:846:29: warning: comparison of distinct pointer types lacks a cast (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1))) ^~ ../include/linux/kernel.h:860:4: note: in expansion of macro ‘__typecheck’ (__typecheck(x, y) && __no_side_effects(x, y)) ^~~~~~~~~~~ ../include/linux/kernel.h:870:24: note: in expansion of macro ‘__safe_cmp’ __builtin_choose_expr(__safe_cmp(x, y), \ ^~~~~~~~~~ ../include/linux/kernel.h:879:19: note: in expansion of macro ‘__careful_cmp’ #define min(x, y) __careful_cmp(x, y, <) ^~~~~~~~~~~~~ ../drivers/dma/imx-dma.c:288:8: note: in expansion of macro ‘min’ now = min(d->len, sg_dma_len(sg)); ^~~ Rework so that we use min_t and pass in the size_t that returns the minimum of two values, using the specified type. Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Acked-by: Olof Johansson <olof@lixom.net> Reviewed-by: Fabio Estevam <festevam@gmail.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
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#
dea7a9fb |
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19-Jul-2018 |
Vinod Koul <vkoul@kernel.org> |
dmaengine: imx-dma: remove dma_slave_config direction usage dma_slave_config direction was marked as deprecated quite some time back, remove the usage from this driver so that the field can be removed Signed-off-by: Vinod Koul <vkoul@kernel.org>
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#
ce9c28ca |
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21-May-2018 |
Fabio Estevam <fabio.estevam@nxp.com> |
dmaengine: imx-dma: Switch to SPDX identifier Adopt the SPDX license identifier headers to ease license compliance management. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
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#
ff5fdafc |
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19-Jan-2018 |
Nicolas Pitre <nico@fluxnic.net> |
ARM: 8745/1: get rid of __memzero() The __memzero assembly code is almost identical to memset's except for two orr instructions. The runtime performance of __memset(p, n) and memset(p, 0, n) is accordingly almost identical. However, the memset() macro used to guard against a zero length and to call __memzero at compile time when the fill value is a constant zero interferes with compiler optimizations. Arnd found tha the test against a zero length brings up some new warnings with gcc v8: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82103 And successively rremoving the test against a zero length and the call to __memzero optimization produces the following kernel sizes for defconfig with gcc 6: text data bss dec hex filename 12248142 6278960 413588 18940690 1210312 vmlinux.orig 12244474 6278960 413588 18937022 120f4be vmlinux.no_zero_test 12239160 6278960 413588 18931708 120dffc vmlinux.no_memzero So it is probably not worth keeping __memzero around given that the compiler can do a better job at inlining trivial memset(p,0,n) on its own. And the memset code already handles a zero length just fine. Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Nicolas Pitre <nico@linaro.org> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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#
bcdc4bd3 |
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24-Oct-2017 |
Kees Cook <keescook@chromium.org> |
dmaengine: Convert timers to use timer_setup() In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
ce818013 |
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30-May-2017 |
Logan Gunthorpe <logang@deltatee.com> |
dmaengine: imx-dma: cleanup scatterlist layering violations This dma engine driver directly accesses page_link assuming knowledge that should be contained only in scatterlist.h. We replace these with calls to sg_chain and sg_assign_page. Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Stephen Bates <sbates@raithlin.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Per Förlin <per.forlin@axis.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
be5af285 |
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20-Jul-2016 |
Dave Jiang <dave.jiang@intel.com> |
dmaengine: imx-dma: convert callback to helper function This is in preperation of moving to a callback that provides results to the callback for the transaction. The conversion will maintain current behavior and the driver must convert to new callback mechanism at a later time in order to receive results. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
71c6b663 |
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02-Jul-2016 |
Vinod Koul <vkoul@kernel.org> |
dmaengine: imx-dma: fix coding style issue imxdma_probe function starting brace is wrongly indented, so fix that Signed-off-by: Vinod Koul <vinod.koul@intel.com> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Linus Walleij <linus.walleij@linaro.org>
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#
ea62aa80 |
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02-Jul-2016 |
Vinod Koul <vkoul@kernel.org> |
dmaengine: imx-dma: explicitly freeup irq dmaengine device should explicitly call devm_free_irq() when using devm_request_irq(). The irq is still ON when devices remove is executed and irq should be quiesced before remove is completed. Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
77a68e56 |
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20-Jul-2015 |
Maxime Ripard <mripard@kernel.org> |
dmaengine: Add an enum for the dmaengine alignment constraints Most drivers need to set constraints on the buffer alignment for async tx operations. However, even though it is documented, some drivers either use a defined constant that is not matching what the alignment variable expects (like DMA_BUSWIDTH_* constants) or fill the alignment in bytes instead of power of two. Add a new enum for these alignments that matches what the framework expects, and convert the drivers to it. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
fce9a74b |
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20-Jun-2015 |
Fabio Estevam <fabio.estevam@freescale.com> |
dmaengine: imx-dma: Check for clk_prepare_enable() error clk_prepare_enable() may fail, so we should better check its return value and propagate it in the case of error. While at it, change the label 'err' to a more descriptive naming. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
afe7cded |
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01-May-2015 |
Krzysztof Kozlowski <krzk@kernel.org> |
dmaengine: imx: Constify platform_device_id The platform_device_id is not modified by the driver and core uses it as const. Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
9265eaed |
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21-Dec-2014 |
Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> |
dmaengine: imx-dma.c: Remove unused function Remove the function is_imx21_dma() that is not used anywhere. This was partially found by using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
502c2ef2 |
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17-Nov-2014 |
Maxime Ripard <mripard@kernel.org> |
dmaengine: imx: Split device_control Split the device_control callback of the Freescale IMX DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
55f04d7f |
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20-Oct-2014 |
Wolfram Sang <wsa@kernel.org> |
dma: drop owner assignment from platform_drivers A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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#
31c1e5a1 |
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31-Jul-2014 |
Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> |
dmaengine: Remove the context argument to the prep_dma_cyclic operation The argument is always set to NULL and never used. Remove it. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
4de9b3b0 |
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22-Feb-2014 |
Alexander Shiyan <shc_work@mail.ru> |
dma: imx-dma: Add missing module owner field Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
1d94fe06 |
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22-Feb-2014 |
Alexander Shiyan <shc_work@mail.ru> |
dma: imx-dma: Replace printk with dev_* Use the dev_* message logging API instead of raw printk. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
ac806a1c |
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30-Oct-2013 |
Russell King <rmk+kernel@arm.linux.org.uk> |
dmaengine: imx-dma: fix format warnings drivers/dma/imx-dma.c:575:3: warning: format '%x' expects argument of type 'unsigned int', but argument 6 has type 'dma_addr_t' drivers/dma/imx-dma.c:575:3: warning: format '%x' expects argument of type 'unsigned int', but argument 7 has type 'dma_addr_t' drivers/dma/imx-dma.c:589:4: warning: format '%x' expects argument of type 'unsigned int', but argument 9 has type 'dma_addr_t' drivers/dma/imx-dma.c:599:4: warning: format '%x' expects argument of type 'unsigned int', but argument 9 has type 'dma_addr_t' drivers/dma/imx-dma.c:929:2: warning: format '%x' expects argument of type 'unsigned int', but argument 6 has type 'dma_addr_t' drivers/dma/imx-dma.c:929:2: warning: format '%x' expects argument of type 'unsigned int', but argument 7 has type 'dma_addr_t' drivers/dma/imx-dma.c:959:2: warning: format '%x' expects argument of type 'unsigned int', but argument 6 has type 'dma_addr_t' drivers/dma/imx-dma.c:959:2: warning: format '%x' expects argument of type 'unsigned int', but argument 7 has type 'dma_addr_t' We can't use the %pa format for these because this relates to phys_addr_t, and dma_addr_t can be a different size. So, fix these by converting them to %llx and casting the dma_addr_t to always be unsigned long long. While we're here, also use %zu for size_t. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
3ded1ad1 |
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16-Oct-2013 |
Vinod Koul <vkoul@kernel.org> |
dmaengine: imx-dma: use DMA_COMPLETE for dma completion status Acked-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
fcaaba6c |
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17-Sep-2013 |
Michael Grzeschik <m.grzeschik@pengutronix.de> |
dmaengine: imx-dma: fix callback path in tasklet We need to free the ld_active list head before jumping into the callback routine. Otherwise the callback could run into issue_pending and change our ld_active list head we just going to free. This will run the channel list into an currupted and undefined state. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
5a276fa6 |
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17-Sep-2013 |
Michael Grzeschik <m.grzeschik@pengutronix.de> |
dmaengine: imx-dma: fix lockdep issue between irqhandler and tasklet The tasklet and irqhandler are using spin_lock while other routines are using spin_lock_irqsave/restore. This leads to lockdep issues as described bellow. This patch is changing the code to use spinlock_irq_save/restore in both code pathes. As imxdma_xfer_desc always gets called with spin_lock_irqsave lock held, this patch also removes the spare call inside the routine to avoid double locking. [ 403.358162] ================================= [ 403.362549] [ INFO: inconsistent lock state ] [ 403.366945] 3.10.0-20130823+ #904 Not tainted [ 403.371331] --------------------------------- [ 403.375721] inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage. [ 403.381769] swapper/0 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 403.386762] (&(&imxdma->lock)->rlock){?.-...}, at: [<c019d77c>] imxdma_tasklet+0x20/0x134 [ 403.395201] {IN-HARDIRQ-W} state was registered at: [ 403.400108] [<c004b264>] mark_lock+0x2a0/0x6b4 [ 403.404798] [<c004d7c8>] __lock_acquire+0x650/0x1a64 [ 403.410004] [<c004f15c>] lock_acquire+0x94/0xa8 [ 403.414773] [<c02f74e4>] _raw_spin_lock+0x54/0x8c [ 403.419720] [<c019d094>] dma_irq_handler+0x78/0x254 [ 403.424845] [<c0061124>] handle_irq_event_percpu+0x38/0x1b4 [ 403.430670] [<c00612e4>] handle_irq_event+0x44/0x64 [ 403.435789] [<c0063a70>] handle_level_irq+0xd8/0xf0 [ 403.440903] [<c0060a20>] generic_handle_irq+0x28/0x38 [ 403.446194] [<c0009cc4>] handle_IRQ+0x68/0x8c [ 403.450789] [<c0008714>] avic_handle_irq+0x3c/0x48 [ 403.455811] [<c0008f84>] __irq_svc+0x44/0x74 [ 403.460314] [<c0040b04>] cpu_startup_entry+0x88/0xf4 [ 403.465525] [<c02f00d0>] rest_init+0xb8/0xe0 [ 403.470045] [<c03e07dc>] start_kernel+0x28c/0x2d4 [ 403.474986] [<a0008040>] 0xa0008040 [ 403.478709] irq event stamp: 50854 [ 403.482140] hardirqs last enabled at (50854): [<c001c6b8>] tasklet_action+0x38/0xdc [ 403.489954] hardirqs last disabled at (50853): [<c001c6a0>] tasklet_action+0x20/0xdc [ 403.497761] softirqs last enabled at (50850): [<c001bc64>] _local_bh_enable+0x14/0x18 [ 403.505741] softirqs last disabled at (50851): [<c001c268>] irq_exit+0x88/0xdc [ 403.513026] [ 403.513026] other info that might help us debug this: [ 403.519593] Possible unsafe locking scenario: [ 403.519593] [ 403.525548] CPU0 [ 403.528020] ---- [ 403.530491] lock(&(&imxdma->lock)->rlock); [ 403.534828] <Interrupt> [ 403.537474] lock(&(&imxdma->lock)->rlock); [ 403.541983] [ 403.541983] *** DEADLOCK *** [ 403.541983] [ 403.547951] no locks held by swapper/0. [ 403.551813] [ 403.551813] stack backtrace: [ 403.556222] CPU: 0 PID: 0 Comm: swapper Not tainted 3.10.0-20130823+ #904 [ 403.563039] Backtrace: [ 403.565581] [<c000b98c>] (dump_backtrace+0x0/0x10c) from [<c000bb28>] (show_stack+0x18/0x1c) [ 403.574054] r6:00000000 r5:c05c51d8 r4:c040bd58 r3:00200000 [ 403.579872] [<c000bb10>] (show_stack+0x0/0x1c) from [<c02f398c>] (dump_stack+0x20/0x28) [ 403.587955] [<c02f396c>] (dump_stack+0x0/0x28) from [<c02f29c8>] (print_usage_bug.part.28+0x224/0x28c) [ 403.597340] [<c02f27a4>] (print_usage_bug.part.28+0x0/0x28c) from [<c004b404>] (mark_lock+0x440/0x6b4) [ 403.606682] r8:c004a41c r7:00000000 r6:c040bd58 r5:c040c040 r4:00000002 [ 403.613566] [<c004afc4>] (mark_lock+0x0/0x6b4) from [<c004d844>] (__lock_acquire+0x6cc/0x1a64) [ 403.622244] [<c004d178>] (__lock_acquire+0x0/0x1a64) from [<c004f15c>] (lock_acquire+0x94/0xa8) [ 403.631010] [<c004f0c8>] (lock_acquire+0x0/0xa8) from [<c02f74e4>] (_raw_spin_lock+0x54/0x8c) [ 403.639614] [<c02f7490>] (_raw_spin_lock+0x0/0x8c) from [<c019d77c>] (imxdma_tasklet+0x20/0x134) [ 403.648434] r6:c3847010 r5:c040e890 r4:c38470d4 [ 403.653194] [<c019d75c>] (imxdma_tasklet+0x0/0x134) from [<c001c70c>] (tasklet_action+0x8c/0xdc) [ 403.662013] r8:c0599160 r7:00000000 r6:00000000 r5:c040e890 r4:c3847114 r3:c019d75c [ 403.670042] [<c001c680>] (tasklet_action+0x0/0xdc) from [<c001bd4c>] (__do_softirq+0xe4/0x1f0) [ 403.678687] r7:00000101 r6:c0402000 r5:c059919c r4:00000001 [ 403.684498] [<c001bc68>] (__do_softirq+0x0/0x1f0) from [<c001c268>] (irq_exit+0x88/0xdc) [ 403.692652] [<c001c1e0>] (irq_exit+0x0/0xdc) from [<c0009cc8>] (handle_IRQ+0x6c/0x8c) [ 403.700514] r4:00000030 r3:00000110 [ 403.704192] [<c0009c5c>] (handle_IRQ+0x0/0x8c) from [<c0008714>] (avic_handle_irq+0x3c/0x48) [ 403.712664] r5:c0403f28 r4:c0593ebc [ 403.716343] [<c00086d8>] (avic_handle_irq+0x0/0x48) from [<c0008f84>] (__irq_svc+0x44/0x74) [ 403.724733] Exception stack(0xc0403f28 to 0xc0403f70) [ 403.729841] 3f20: 00000001 00000004 00000000 20000013 c0402000 c04104a8 [ 403.738078] 3f40: 00000002 c0b69620 a0004000 41069264 a03fb5f4 c0403f7c c0403f40 c0403f70 [ 403.746301] 3f60: c004b92c c0009e74 20000013 ffffffff [ 403.751383] r6:ffffffff r5:20000013 r4:c0009e74 r3:c004b92c [ 403.757210] [<c0009e30>] (arch_cpu_idle+0x0/0x4c) from [<c0040b04>] (cpu_startup_entry+0x88/0xf4) [ 403.766161] [<c0040a7c>] (cpu_startup_entry+0x0/0xf4) from [<c02f00d0>] (rest_init+0xb8/0xe0) [ 403.774753] [<c02f0018>] (rest_init+0x0/0xe0) from [<c03e07dc>] (start_kernel+0x28c/0x2d4) [ 403.783051] r6:c03fc484 r5:ffffffff r4:c040a0e0 [ 403.787797] [<c03e0550>] (start_kernel+0x0/0x2d4) from [<a0008040>] (0xa0008040) Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
edc530fe |
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17-Sep-2013 |
Michael Grzeschik <m.grzeschik@pengutronix.de> |
dmaengine: imx-dma: fix slow path issue in prep_dma_cyclic When perparing cyclic_dma buffers by the sound layer, it will dump the following lockdep trace. The leading snd_pcm_action_single get called with read_lock_irq called. To fix this, we change the kcalloc call from GFP_KERNEL to GFP_ATOMIC. WARNING: at kernel/lockdep.c:2740 lockdep_trace_alloc+0xcc/0x114() DEBUG_LOCKS_WARN_ON(irqs_disabled_flags(flags)) Modules linked in: CPU: 0 PID: 832 Comm: aplay Not tainted 3.11.0-20130823+ #903 Backtrace: [<c000b98c>] (dump_backtrace+0x0/0x10c) from [<c000bb28>] (show_stack+0x18/0x1c) r6:c004c090 r5:00000009 r4:c2e0bd18 r3:00404000 [<c000bb10>] (show_stack+0x0/0x1c) from [<c02f397c>] (dump_stack+0x20/0x28) [<c02f395c>] (dump_stack+0x0/0x28) from [<c001531c>] (warn_slowpath_common+0x54/0x70) [<c00152c8>] (warn_slowpath_common+0x0/0x70) from [<c00153dc>] (warn_slowpath_fmt+0x38/0x40) r8:00004000 r7:a3b90000 r6:000080d0 r5:60000093 r4:c2e0a000 r3:00000009 [<c00153a4>] (warn_slowpath_fmt+0x0/0x40) from [<c004c090>] (lockdep_trace_alloc+0xcc/0x114) r3:c03955d8 r2:c03907db [<c004bfc4>] (lockdep_trace_alloc+0x0/0x114) from [<c008f16c>] (__kmalloc+0x34/0x118) r6:000080d0 r5:c3800120 r4:000080d0 r3:c040a0f8 [<c008f138>] (__kmalloc+0x0/0x118) from [<c019c95c>] (imxdma_prep_dma_cyclic+0x64/0x168) r7:a3b90000 r6:00000004 r5:c39d8420 r4:c3847150 [<c019c8f8>] (imxdma_prep_dma_cyclic+0x0/0x168) from [<c024618c>] (snd_dmaengine_pcm_trigger+0xa8/0x160) [<c02460e4>] (snd_dmaengine_pcm_trigger+0x0/0x160) from [<c0241fa8>] (soc_pcm_trigger+0x90/0xb4) r8:c058c7b0 r7:c3b8140c r6:c39da560 r5:00000001 r4:c3b81000 [<c0241f18>] (soc_pcm_trigger+0x0/0xb4) from [<c022ece4>] (snd_pcm_do_start+0x2c/0x38) r7:00000000 r6:00000003 r5:c058c7b0 r4:c3b81000 [<c022ecb8>] (snd_pcm_do_start+0x0/0x38) from [<c022e958>] (snd_pcm_action_single+0x40/0x6c) [<c022e918>] (snd_pcm_action_single+0x0/0x6c) from [<c022ea64>] (snd_pcm_action_lock_irq+0x7c/0x9c) r7:00000003 r6:c3b810f0 r5:c3b810f0 r4:c3b81000 [<c022e9e8>] (snd_pcm_action_lock_irq+0x0/0x9c) from [<c023009c>] (snd_pcm_common_ioctl1+0x7f8/0xfd0) r8:c3b7f888 r7:005407b8 r6:c2c991c0 r5:c3b81000 r4:c3b81000 r3:00004142 [<c022f8a4>] (snd_pcm_common_ioctl1+0x0/0xfd0) from [<c023117c>] (snd_pcm_playback_ioctl1+0x464/0x488) [<c0230d18>] (snd_pcm_playback_ioctl1+0x0/0x488) from [<c02311d4>] (snd_pcm_playback_ioctl+0x34/0x40) r8:c3b7f888 r7:00004142 r6:00000004 r5:c2c991c0 r4:005407b8 [<c02311a0>] (snd_pcm_playback_ioctl+0x0/0x40) from [<c00a14a4>] (vfs_ioctl+0x30/0x44) [<c00a1474>] (vfs_ioctl+0x0/0x44) from [<c00a1fe8>] (do_vfs_ioctl+0x55c/0x5c0) [<c00a1a8c>] (do_vfs_ioctl+0x0/0x5c0) from [<c00a208c>] (SyS_ioctl+0x40/0x68) [<c00a204c>] (SyS_ioctl+0x0/0x68) from [<c0009380>] (ret_fast_syscall+0x0/0x44) r8:c0009544 r7:00000036 r6:bedeaa58 r5:00000000 r4:000000c0 Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
06f8db4b |
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02-Sep-2013 |
Sachin Kamat <sachin.kamat@linaro.org> |
dma: imx-dma: Remove redundant NULL check kfree on a NULL pointer is a no-op. Null pointer check is not necessary. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
5c6b3e77 |
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26-May-2013 |
Markus Pargmann <mpa@pengutronix.de> |
DMA: imx-dma: imxdma->dev used uninitialized imxdma->dev is used for dev_warn before it was set. Signed-off-by: Markus Pargmann <mpa@pengutronix.de> Reviewed-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
290ad0f9 |
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26-May-2013 |
Markus Pargmann <mpa@pengutronix.de> |
dma: imx-dma: Add oftree support Adding devicetree support for imx-dma driver. Use driver name for function 'imx_dma_is_general_purpose' because the devicename for devicetree initialized devices is different. Signed-off-by: Markus Pargmann <mpa@pengutronix.de> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
96a3713e |
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24-Feb-2013 |
Syam Sidhardhan <syamsidhardh@gmail.com> |
dma: imx-dma: Remove redundant NULL check before kfree kfree on NULL pointer is a no-op. Signed-off-by: Syam Sidhardhan <s.syam@samsung.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
1d1bbd30 |
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19-Feb-2013 |
Maxin B. John <maxin.john@enea.com> |
dma: Remove erroneous __exit and __exit_p() references Removing the annotation with __exit and referencing with __exit_p() present in dma driver module remove hooks. Part of the __devexit and __devexit_p() purge. Signed-off-by: Maxin B. John <maxin.john@enea.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
7331205a |
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21-Jan-2013 |
Thierry Reding <thierry.reding@avionic-design.de> |
dma: Convert to devm_ioremap_resource() Convert all uses of devm_request_and_ioremap() to the newly introduced devm_ioremap_resource() which provides more consistent error handling. devm_ioremap_resource() provides its own error messages so all explicit error messages can be removed from the failure code paths. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Cc: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
bef2a8d3 |
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30-Oct-2012 |
Javier Martin <javier.martin@vista-silicon.com> |
dmaengine: imx-dma: Disable use of hw_chain to fix sg_dma transfers. HW chaining is currently broken in imx-dma. It can be easily reproduced doing intensive accesses to a external MMC card and checking how the file system is corrupted. Preventing the driver to use HW chaining solves these issues. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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#
720dfd25 |
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21-Oct-2012 |
Wei Yongjun <yongjun_wei@trendmicro.com.cn> |
dmaengine: imx-dma: fix missing unlock on error in imxdma_xfer_desc() Add the missing unlock on the error handling path in function imxdma_xfer_desc(). Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Cc: stable <stable@vger.kernel.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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#
e51d0f0a |
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15-Sep-2012 |
Shawn Guo <shawn.guo@linaro.org> |
dma: imx-dma: remove cpu_is_xxx by using platform_device_id It changes the driver to use platform_device_id rather than cpu_is_xxx to determine the controller type, and updates the platform code accordingly. As the result, mach/hardware.h inclusion gets removed from the driver. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Tested-by: Javier Martin <javier.martin@vista-silicon.com> Cc: Vinod Koul <vinod.koul@linux.intel.com>
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#
73930eb3 |
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15-Sep-2012 |
Shawn Guo <shawn.guo@linaro.org> |
dma: imx-dma: retrieve MEM and IRQ from resources Retrieve MEM and IRQ from resources rather than directly using the value by including machine header. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: Vinod Koul <vinod.koul@linux.intel.com>
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#
04bbd8ef |
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15-Sep-2012 |
Shawn Guo <shawn.guo@linaro.org> |
dma: imx-dma: use devm_kzalloc and devm_request_irq Use managed functions devm_kzalloc and devm_request_irq instead to make the error patch simpler. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: Vinod Koul <vinod.koul@linux.intel.com>
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#
ec8b5e48 |
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14-Sep-2012 |
Peter Ujfalusi <peter.ujfalusi@ti.com> |
dmaengine: Pass flags via device_prep_dma_cyclic() callback Change the parameter list of device_prep_dma_cyclic() so the DMA drivers can receive the flags coming from clients. This feature can be used during audio operation to disable all audio related interrupts when the DMA_PREP_INTERRUPT is cleared from the flags. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Vinod Koul <vinod.koul@linux.intel.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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#
82906b13 |
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24-Aug-2012 |
Arnd Bergmann <arnd@arndb.de> |
ARM: imx: move platform_data definitions Platform data for device drivers should be defined in include/linux/platform_data/*.h, not in the architecture and platform specific directories. This moves such data out of the imx include directories Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Sascha Hauer <kernel@pengutronix.de> Acked-by: Vinod Koul <vinod.koul@linux.intel.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Dan Williams <djbw@fb.com> Cc: "Ben Dooks (embedded platforms)" <ben-linux@fluff.org> Cc: "Wolfram Sang (embedded platforms)" <w.sang@pengutronix.de> Cc: Chris Ball <cjb@laptop.org> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Alan Cox <alan@linux.intel.com> Cc: Felipe Balbi <balbi@ti.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: Liam Girdwood <lrg@ti.com> Cc: Javier Martin <javier.martin@vista-silicon.com> Cc: Shawn Guo <shawn.guo@linaro.org> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
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#
d73111c6 |
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04-Aug-2012 |
Masanari Iida <standby24x7@gmail.com> |
dma: fix comments Correct spelling typo in drivers/dma. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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a2367db2 |
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03-Jul-2012 |
Fabio Estevam <festevam@gmail.com> |
dma: imx-dma: Fix kernel crash due to missing clock conversion With the new i.MX clock infrastructure we need to request the dma clocks seperately: ahb and ipg clocks. This fixes the following kernel crash and make audio to be functional again: root@freescale /home$ aplay audio48k16S.wav Playing WAVE 'audio48k16S.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo Unable to handle kernel NULL pointer dereference at virtual address 00000000 pgd = c7b74000 [00000000] *pgd=a7bb5831, *pte=00000000, *ppte=00000000 Internal error: Oops: 17 [#1] PREEMPT ARM Modules linked in: CPU: 0 Not tainted (3.5.0-rc5-next-20120702-00007-g3028b64 #1128) PC is at snd_dmaengine_pcm_get_chan+0x8/0x10 LR is at snd_imx_pcm_hw_params+0x18/0xdc pc : [<c02d3cf8>] lr : [<c02e95ec>] psr: a0000013 sp : c7b45e30 ip : ffffffff fp : c7ae58e0 r10: 00000000 r9 : c7ae981c r8 : c7b88800 r7 : c7ae5a60 r6 : c7ae5b20 r5 : c7ae9810 r4 : c7afa060 r3 : 00000000 r2 : 00000001 r1 : c7b88800 r0 : c7afa060 Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 0005317f Table: a7b74000 DAC: 00000015 Process aplay (pid: 701, stack limit = 0xc7b44270) Stack: (0xc7b45e30 to 0xc7b46000) 5e20: 00100000 00000029 c7b88800 c02db870 5e40: c7ae5a60 c02d4594 00000010 01ae5a60 c7ae5a60 c7ae9810 c7ae9810 c7afa060 5e60: c7ae5b20 c7ae5a60 c7b88800 c02e3ef0 c02e3e08 c7b1e400 c7afa060 c7b88800 5e80: 00000000 c0014da8 c7b44000 00000000 bec566ac c02cd400 c7afa060 c7afa060 5ea0: bec56800 c7b88800 c0014da8 c02cdd7c c04ee710 c04ee7b8 00000003 c005fc74 5ec0: 00000000 7fffffff c7b45f00 c7afa060 c7b67420 c7ba3070 00000004 c0014da8 5ee0: c7b44000 00000000 bec566ac c02ced88 c04e95f8 b6f5ab04 c7b45fb0 0145a468 5f00: 0145a600 bec566bc bec56800 c7b67420 c7ba3070 c00d499c c7b45f18 c7b45f18 5f20: 0000001a 00000004 00000001 c7b44000 c0527f40 00000009 00000008 00000000 5f40: c7b44000 c002c9ec 00000001 c04f0ab0 c04ebec0 00000101 00000000 0000000a 5f60: 60000093 c7b67420 bec56800 c25c4111 00000004 c0014da8 c7b44000 00000000 5f80: bec566ac c00d4f38 b6ffb658 00000000 c0522d80 0145a468 b6fd5000 0145a418 5fa0: 00000036 c0014c00 0145a468 b6fd5000 00000004 c25c4111 bec56800 00020001 5fc0: 0145a468 b6fd5000 0145a418 00000036 0145a468 0145a600 bec566bc bec566ac 5fe0: 0145a468 bec56388 b6f65ce4 b6dcebec 20000010 00000004 00000000 00000000 [<c02d3cf8>] (snd_dmaengine_pcm_get_chan+0x8/0x10) from [<c02e95ec>] (snd_imx_pcm_hw_params+0x18/0xdc) [<c02e95ec>] (snd_imx_pcm_hw_params+0x18/0xdc) from [<c02e3ef0>] (soc_pcm_hw_params+0xe8/0x1f0) [<c02e3ef0>] (soc_pcm_hw_params+0xe8/0x1f0) from [<c02cd400>] (snd_pcm_hw_params+0x124/0x474) [<c02cd400>] (snd_pcm_hw_params+0x124/0x474) from [<c02cdd7c>] (snd_pcm_common_ioctl1+0x4b4/0xf74) [<c02cdd7c>] (snd_pcm_common_ioctl1+0x4b4/0xf74) from [<c02ced88>] (snd_pcm_playback_ioctl1+0x30/0x510) [<c02ced88>] (snd_pcm_playback_ioctl1+0x30/0x510) from [<c00d499c>] (do_vfs_ioctl+0x80/0x5e4) [<c00d499c>] (do_vfs_ioctl+0x80/0x5e4) from [<c00d4f38>] (sys_ioctl+0x38/0x60) [<c00d4f38>] (sys_ioctl+0x38/0x60) from [<c0014c00>] (ret_fast_syscall+0x0/0x2c) Code: e593000c e12fff1e e59030a0 e59330bc (e5930000) ---[ end trace fa518c8ba3a74e97 ]-- Reported-by: Javier Martin <javier.martin@vista-silicon.com> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com> Cc: stable@vger.kernel.org
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#
fdaf9c4b |
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25-Apr-2012 |
Lars-Peter Clausen <lars@metafoo.de> |
dmaengine: Use dma_sg_len(sg) instead of sg->length sg->length may or may not contain the length of the dma region to transfer, depending on the architecture - dma_sg_len(sg) always will though. For the architectures which use the drivers modified by this patch it probably is the case that sg->length contains the dma transfer length. But to be consistent and future proof change them to use dma_sg_len. To quote Russel King: sg->length is meaningless to something performing DMA. In cases where sg_dma_len(sg) and sg->length are the same storage, then there's no problem. But scatterlists _can_ (and one some architectures) do split them - especially when you have an IOMMU which can allow you to combine a scatterlist into fewer entries. So, anything using sg->length for the size of a scatterlist's DMA transfer _after_ a call to dma_map_sg() is almost certainly buggy. The patch has been generated using the following coccinelle patch: <smpl> @@ struct scatterlist *sg; expression X; @@ -sg[X].length +sg_dma_len(&sg[X]) @@ struct scatterlist *sg; @@ -sg->length +sg_dma_len(sg) </smpl> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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#
60f2951e |
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20-Apr-2012 |
Vinod Koul <vkoul@kernel.org> |
dmaengine: imx-dma: dont complete descriptor for cyclic dma the cookie updates completed the cyclic dma descriptor wrongly. This caused the BUG_ON to be hit as submit is called for completed descriptor Fix this by not marking the cyclic descriptor as complete Tested-by: Javier Martin <javier.martin@vista-silicon.com> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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660cd0dd |
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22-Mar-2012 |
Javier Martin <javier.martin@vista-silicon.com> |
dmaengine: i.MX: Fix merge of cookie branch. When merging DMA cookie changes a small chunk of code was dropped. This broke imx-dma driver. This patch adds this chunk again and fixes the problem. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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#
f606ab89 |
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22-Mar-2012 |
Javier Martin <javier.martin@vista-silicon.com> |
dmaengine: i.MX: Add support for interleaved transfers. i.MX2 and i.MX1 chips have the possibility to do interleaved transfers with two constraints: - Only one chunk can be used (i.e. only 2D transfers are allowed). - Only 2 interleaved configurations can be applied at the same time for all channels. Since this patch adds a new resource 'slots_2d' which is shared by all the DMA channels and to avoid disgustin locking BUGs, the 'lock' member has been moved to the global 'imxdma_engine' structure. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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#
f9b283a6 |
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22-Mar-2012 |
Javier Martin <javier.martin@vista-silicon.com> |
dmaengine: imx-dma: use 'dev_dbg' and 'dev_warn' for messages. There were some 'pr_crit' and 'pr_debug' messages due to the initial merge. Replace them by 'dev_dbg' and 'dev_warn' to be consistent. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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#
cd5cf9da |
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22-Mar-2012 |
Javier Martin <javier.martin@vista-silicon.com> |
dmaengine: imx-dma: remove 'imx_dmav1_baseaddr' and 'dma_clk'. These global variables are integrated into the dmaengine structure. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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#
a6cbb2d8 |
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22-Mar-2012 |
Javier Martin <javier.martin@vista-silicon.com> |
dmaengine: imx-dma: remove unused arg of imxdma_sg_next. Since this function is always used with 'desc' as first argument and 'desc->sg' as second argument, the latter is clearly redundant and can be removed. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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#
2d9c2fc5 |
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22-Mar-2012 |
Javier Martin <javier.martin@vista-silicon.com> |
dmaengine: imx-dma: remove internal structure. This structure was created to allow an smoothless merge but was meant to be removed. Remaining members 'hw_chaining' and 'watchdog' are moved to the channel structure. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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#
6b0e2f55 |
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22-Mar-2012 |
Javier Martin <javier.martin@vista-silicon.com> |
dmaengine: imx-dma: remove 'resbytes' field of 'internal' structure. Use per-descriptor 'len' field to keep track of the remaining bytes instead. This goes on the direction of eventually removing the 'internal' structure. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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#
e4756b5e |
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22-Mar-2012 |
Javier Martin <javier.martin@vista-silicon.com> |
dmaengine: imx-dma: remove 'in_use' field of 'internal' structure. It makes no sense keeping an 'in_use' flag when the multiple descriptor mechanism already prevents a new DMA transfer to be issued when another one is in course. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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#
833bc03b |
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22-Mar-2012 |
Javier Martin <javier.martin@vista-silicon.com> |
dmaengine: imx-dma: remove sg member from internal structure. This member is redundant, because it is already present in descriptor structure. Removing it will make further removing of 'internal' structure easier. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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#
359291a1 |
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22-Mar-2012 |
Javier Martin <javier.martin@vista-silicon.com> |
dmaengine: imx-dma: remove 'imxdma_setup_sg_hw' function. Removing this function allows moving 'ccr_to_device' and 'ccr_from_device' from internal struct to channel struct. This repesents a step forward towards removing auxiliary 'internal' structure. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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#
bdc0c753 |
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22-Mar-2012 |
Javier Martin <javier.martin@vista-silicon.com> |
dmaengine: imx-dma: remove 'imxdma_config_channel_hw' function. This function is only used once in the driver and uses some intermediary variables that are not needed anymore. For this reason it's been merged with 'imxdma_control'. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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#
3b4b6dfc |
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22-Mar-2012 |
Javier Martin <javier.martin@vista-silicon.com> |
dmaengine: imx-dma: remove 'imxdma_setup_mem2mem_hw' function. This function is only used once in the driver and has a lot of checks that are not needed anymore. For this reason it's been merged with 'imxdma_enable_hw'. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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2efc3449 |
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22-Mar-2012 |
Javier Martin <javier.martin@vista-silicon.com> |
dmaengine: imx-dma: remove dma_mode member of internal structure. dmaengine now provides 'enum dma_transfer_direction' to properly specify DMA transfer direction. For this reason, DMA_MODE_* defines are replaced by this new type and therefore dma_mode member becomes redundant. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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232e3c2c |
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22-Mar-2012 |
Javier Martin <javier.martin@vista-silicon.com> |
dmaengine: imx-dma: remove data member from internal structure. Internal structure is just an auxiliary structure used for the initial merge which is meant to be gone. As data member is not use anywhere we can simply remove it. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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6bd08127 |
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22-Mar-2012 |
Javier Martin <javier.martin@vista-silicon.com> |
dmaengine: imx-dma: merge old dma-v1.c with imx-dma.c It is mainly a simple merge changing the prefix of some functions to fit the imx-dma namings. As there are no users of the old dma-v1.c api we can safely remove this file. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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185ecb5f |
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08-Mar-2012 |
Alexandre Bounine <alexandre.bounine@idt.com> |
dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic Add context parameter to device_prep_slave_sg() and device_prep_dma_cyclic() interfaces to allow passing client/target specific information associated with the data transfer. Modify all affected DMA engine drivers. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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8ac69546 |
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06-Mar-2012 |
Russell King - ARM Linux <linux@arm.linux.org.uk> |
dmaengine: ensure all DMA engine drivers initialize their cookies Ensure all DMA engine drivers initialize their cookies in the same way, so that they all behave in a similar fashion. This means their first issued cookie will be 2 rather than 1, and will increment to INT_MAX before returning 1 and starting over. In connection with this, Dan Williams said: > Russell King wrote: > > Secondly, some DMA engine drivers initialize the dma_chan cookie to 0, > > others to 1. Is there a reason for this, or are these all buggy? > > I know that ioat and iop-adma expect 0 to mean "I have cleaned up this > descriptor and it is idle", and would break if zero was an in-flight > cookie value. The reserved usage of zero is an driver internal > concern, but I have no problem formalizing it as a reserved value. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> [imx-sdma.c & mxs-dma.c] Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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96a2af41 |
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06-Mar-2012 |
Russell King - ARM Linux <linux@arm.linux.org.uk> |
dmaengine: consolidate tx_status functions Now that we have the completed cookie in the dma_chan structure, we can consolidate the tx_status functions by providing a function to set the txstate structure and returning the DMA status. We also provide a separate helper to set the residue for cookies which are still in progress. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> [imx-sdma.c & mxs-dma.c] Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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f7fbce07 |
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06-Mar-2012 |
Russell King - ARM Linux <linux@arm.linux.org.uk> |
dmaengine: provide a common function for completing a dma descriptor Provide a common function to do the cookie mechanics for completing a DMA descriptor. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> [imx-sdma.c & mxs-dma.c] Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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884485e1 |
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06-Mar-2012 |
Russell King - ARM Linux <linux@arm.linux.org.uk> |
dmaengine: consolidate assignment of DMA cookies Everyone deals with assigning DMA cookies in the same way (it's part of the API so they should be), so lets consolidate the common code into a helper function to avoid this duplication. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> [imx-sdma.c & mxs-dma.c] Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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d2ebfb33 |
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06-Mar-2012 |
Russell King - ARM Linux <linux@arm.linux.org.uk> |
dmaengine: add private header file Add a local private header file to contain definitions and declarations which should only be used by DMA engine drivers. We also fix linux/dmaengine.h to use LINUX_DMAENGINE_H to guard against multiple inclusion. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> [imx-sdma.c & mxs-dma.c] Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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4d4e58de |
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06-Mar-2012 |
Russell King - ARM Linux <linux@arm.linux.org.uk> |
dmaengine: move last completed cookie into generic dma_chan structure Every DMA engine implementation declares a last completed dma cookie in their private dma channel structures. This is pointless, and forces driver specific code. Move this out into the common dma_chan structure. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> [imx-sdma.c & mxs-dma.c] Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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5170c051 |
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09-Mar-2012 |
Vinod Koul <vkoul@kernel.org> |
Revert "drivers/dma: linux/module.h included twice" This reverts commit 865d9438eb1f7670d2e88849f059db551b320887. The module.h incsuion twice has been updated tree wide hence this is not required to be merged. Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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9e15db7c |
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02-Mar-2012 |
Javier Martin <javier.martin@vista-silicon.com> |
dmaengine: Add support for multiple descriptors for imx-dma. dmaengine specifies the possibility that several descriptors can be queued for transfer. It also indicates that tasklets must be used for DMA callbacks. Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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6c05f091 |
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28-Feb-2012 |
Javier Martin <javier.martin@vista-silicon.com> |
dmaengine: Add support for MEMCPY for imx-dma. MEMCPY transfers allow DMA copies from memory to memory. This patch has been tested with dmatest device driver. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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865d9438 |
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15-Feb-2012 |
Danny Kukawka <danny.kukawka@bisect.de> |
drivers/dma: linux/module.h included twice drivers/dma/imx-dma.c and drivers/dma/imx-sdma.c included 'linux/module.h' twice, remove the duplicates. Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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13ae246d |
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29-Jan-2012 |
Paul Gortmaker <paul.gortmaker@windriver.com> |
includecheck: delete any duplicate instances of module.h Different tree maintainers picked up independently generated trivial compile fixes based on linux-next testing, resulting in some cases where a file would have got more than one addition of module.h once everything was all merged together. Delete any duplicates so includecheck isn't complaining about anything related to module.h/export.h changes. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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5b316876 |
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09-Jan-2012 |
Sascha Hauer <s.hauer@pengutronix.de> |
dma: imx-dma: start transfer in issue_pending The DMA engine API requires that transfers are started in issue_pending instead of tx_submit. Fix this. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> [corrected change log to DMA engine API insteadof DMA API] Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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5c45ad77 |
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31-Jul-2011 |
Paul Gortmaker <paul.gortmaker@windriver.com> |
drivers/dma: Add module.h to files implicitly using it. Fix files that were implicitly using module.h but not calling it out for inclusion directly. We'll break those once we remove the implicit presence otherwise [With input from Uwe Kleine-König <u.kleine-koenig@pengutronix.de>] Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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db8196df |
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13-Oct-2011 |
Vinod Koul <vkoul@kernel.org> |
dmaengine: move drivers to dma_transfer_direction fixup usage of dma direction by introducing dma_transfer_direction, this patch moves dma/drivers/* to use new enum Cc: Jassi Brar <jaswinder.singh@linaro.org> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Viresh Kumar <viresh.kumar@st.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Mika Westerberg <mika.westerberg@iki.fi> Cc: H Hartley Sweeten <hartleys@visionengravers.com> Cc: Li Yang <leoli@freescale.com> Cc: Zhang Wei <zw@zh-kernel.org> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Shawn Guo <shawn.guo@freescale.com> Cc: Yong Wang <yong.y.wang@intel.com> Cc: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com> Cc: Boojin Kim <boojin.kim@samsung.com> Cc: Barry Song <Baohua.Song@csr.com> Acked-by: Mika Westerberg <mika.westerberg@iki.fi> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Viresh Kumar <viresh.kumar@st.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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f8de8f4c |
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30-Aug-2011 |
Axel Lin <axel.lin@gmail.com> |
dmaengine i.MX DMA/SDMA: add missing include of linux/module.h Add missing include of linux/module.h to fix build error. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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6584cb88 |
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06-Jul-2011 |
Sascha Hauer <s.hauer@pengutronix.de> |
ARM i.MX dma: Fix burstsize settings dmaengine expects the maxburst parameter in words, not bytes. The imxdma driver and its users do this wrong. Fix this. As a side note the imx-pcm-dma-mx2 driver was 'fixed' to work with imx-dma. This broke the driver with imx-sdma support which correctly takes the maxburst parameter in words. This patch puts the sdma based sound back to work. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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f8a356ff |
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31-Jan-2011 |
Sascha Hauer <s.hauer@pengutronix.de> |
dmaengine i.MX dma: initialize dma capabilities outside channel loop The capabilities are device specific fields, not channel specific fields. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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97a43dfe |
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31-Jan-2011 |
Sascha Hauer <s.hauer@pengutronix.de> |
dmaengine i.MX DMA: do not initialize chan_id field Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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d07102a1 |
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12-Jan-2011 |
Sascha Hauer <s.hauer@pengutronix.de> |
dmaengine i.MX dma: check sg entries for valid addresses and lengths Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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1e070a60 |
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12-Jan-2011 |
Sascha Hauer <s.hauer@pengutronix.de> |
dmaengine i.MX dma: set maximum segment size for our device Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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cbeae418 |
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01-Nov-2010 |
Axel Lin <axel.lin@gmail.com> |
dma: imx-dma: fix imxdma_probe error path otherwise, i will be -1 inside the latest iteration of the while loop. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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8267f16e |
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20-Oct-2010 |
Sascha Hauer <s.hauer@pengutronix.de> |
dma: imx-dma: fix signedness bug mxdmac->channel was unsigned, so check (imxdmac->channel < 0) for failed imx_dma_request_by_prio() made no sence. Explicitly check signed values. Also, fix uninitialzed use of ret. Signed-off-by: Vasiliy Kulikov <segooon@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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1f1846c6 |
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06-Oct-2010 |
Sascha Hauer <s.hauer@pengutronix.de> |
dmaengine: Add Freescale i.MX1/21/27 DMA driver This driver is currently implemented as a user to the old i.MX DMA API. This allows us to convert each user of the old API to the dmaengine API one by one. Once this is done the old DMA driver can be merged into the i.MX dmaengine driver. V2: remove some debug leftovers and unused variables Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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