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292a089d |
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20-Dec-2022 |
Steven Rostedt (Google) <rostedt@goodmis.org> |
treewide: Convert del_timer*() to timer_shutdown*() Due to several bugs caused by timers being re-armed after they are shutdown and just before they are freed, a new state of timers was added called "shutdown". After a timer is set to this state, then it can no longer be re-armed. The following script was run to find all the trivial locations where del_timer() or del_timer_sync() is called in the same function that the object holding the timer is freed. It also ignores any locations where the timer->function is modified between the del_timer*() and the free(), as that is not considered a "trivial" case. This was created by using a coccinelle script and the following commands: $ cat timer.cocci @@ expression ptr, slab; identifier timer, rfield; @@ ( - del_timer(&ptr->timer); + timer_shutdown(&ptr->timer); | - del_timer_sync(&ptr->timer); + timer_shutdown_sync(&ptr->timer); ) ... when strict when != ptr->timer ( kfree_rcu(ptr, rfield); | kmem_cache_free(slab, ptr); | kfree(ptr); ) $ spatch timer.cocci . > /tmp/t.patch $ patch -p1 < /tmp/t.patch Link: https://lore.kernel.org/lkml/20221123201306.823305113@linutronix.de/ Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Acked-by: Pavel Machek <pavel@ucw.cz> [ LED ] Acked-by: Kalle Valo <kvalo@kernel.org> [ wireless ] Acked-by: Paolo Abeni <pabeni@redhat.com> [ networking ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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#
de4eda9d |
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15-Sep-2022 |
Al Viro <viro@zeniv.linux.org.uk> |
use less confusing names for iov_iter direction initializers READ/WRITE proved to be actively confusing - the meanings are "data destination, as used with read(2)" and "data source, as used with write(2)", but people keep interpreting those as "we read data from it" and "we write data to it", i.e. exactly the wrong way. Call them ITER_DEST and ITER_SOURCE - at least that is harder to misinterpret... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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#
2568a7e0 |
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28-Sep-2022 |
Duoming Zhou <duoming@zju.edu.cn> |
mISDN: fix use-after-free bugs in l1oip timer handlers The l1oip_cleanup() traverses the l1oip_ilist and calls release_card() to cleanup module and stack. However, release_card() calls del_timer() to delete the timers such as keep_tl and timeout_tl. If the timer handler is running, the del_timer() will not stop it and result in UAF bugs. One of the processes is shown below: (cleanup routine) | (timer handler) release_card() | l1oip_timeout() ... | del_timer() | ... ... | kfree(hc) //FREE | | hc->timeout_on = 0 //USE Fix by calling del_timer_sync() in release_card(), which makes sure the timer handlers have finished before the resources, such as l1oip and so on, have been deallocated. What's more, the hc->workq and hc->socket_thread can kick those timers right back in. We add a bool flag to show if card is released. Then, check this flag in hc->workq and hc->socket_thread. Fixes: 3712b42d4b1b ("Add layer1 over IP support") Signed-off-by: Duoming Zhou <duoming@zju.edu.cn> Reviewed-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
5979415d |
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29-Mar-2021 |
Shixin Liu <liushixin2@huawei.com> |
mISDN: Use LIST_HEAD() for list_head There's no need to declare a list and then init it manually, just use the LIST_HEAD() macro. Signed-off-by: Shixin Liu <liushixin2@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
77053fb7 |
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29-Mar-2021 |
Shixin Liu <liushixin2@huawei.com> |
mISDN: Use DEFINE_SPINLOCK() for spinlock spinlock can be initialized automatically with DEFINE_SPINLOCK() rather than explicitly calling spin_lock_init(). Changelog: From v1: 1. fix the mistake reported by kernel test robot. Signed-off-by: Shixin Liu <liushixin2@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
67a580aa |
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09-Mar-2021 |
Wang Qing <wangqing@vivo.com> |
drivers: isdn: mISDN: fix spelling typo of 'wheter' wheter -> whether Signed-off-by: Wang Qing <wangqing@vivo.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
0f817a5e |
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21-Aug-2019 |
Markus Elfring <elfring@users.sourceforge.net> |
mISDN: Delete unnecessary checks before the macro call “dev_kfree_skb” The dev_kfree_skb() function performs also input parameter validation. Thus the test around the shown calls is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
de6cc651 |
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27-May-2019 |
Thomas Gleixner <tglx@linutronix.de> |
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 153 Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 675 mass ave cambridge ma 02139 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 77 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Armijn Hemel <armijn@tjaldur.nl> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.837555891@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
aa563d7b |
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19-Oct-2018 |
David Howells <dhowells@redhat.com> |
iov_iter: Separate type from direction and use accessor functions In the iov_iter struct, separate the iterator type from the iterator direction and use accessor functions to access them in most places. Convert a bunch of places to use switch-statements to access them rather then chains of bitwise-AND statements. This makes it easier to add further iterator types. Also, this can be more efficient as to implement a switch of small contiguous integers, the compiler can use ~50% fewer compare instructions than it has to use bitwise-and instructions. Further, cease passing the iterator type into the iterator setup function. The iterator function can set that itself. Only the direction is required. Signed-off-by: David Howells <dhowells@redhat.com>
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#
9a438161 |
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10-Apr-2018 |
Laura Abbott <labbott@redhat.com> |
mISDN: Remove VLAs There's an ongoing effort to remove VLAs[1] from the kernel to eventually turn on -Wvla. Remove the VLAs from the mISDN code by switching to using kstrdup in one place and using an upper bound in another. Signed-off-by: Laura Abbott <labbott@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
956a27ec |
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20-Sep-2017 |
Al Viro <viro@zeniv.linux.org.uk> |
mISDN: switch to sock_recvmsg() here we do need to reinitialize ->msg_iter on each call - the data in buffer is overwritten every time, not appended to. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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#
28e8c191 |
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03-Nov-2017 |
Gustavo A. R. Silva <garsilva@embeddedor.com> |
mISDN: l1oip_core: replace _manual_ swap with swap macro Make use of the swap macro and remove unnecessary variables skb and cnt. This makes the code easier to read and maintain. This code was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
e313ac12 |
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16-Oct-2017 |
Kees Cook <keescook@chromium.org> |
mISDN: 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. Cc: Karsten Keil <isdn@linux-pingi.de> Cc: Geliang Tang <geliangtang@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Anton Vasilyev <vasilyev@ispras.ru> Cc: Ingo Molnar <mingo@kernel.org> Cc: netdev@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
aff55a36 |
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23-Mar-2017 |
Geliang Tang <geliangtang@gmail.com> |
isdn: use setup_timer Use setup_timer() instead of init_timer() to simplify the code. Signed-off-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
3f07c014 |
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08-Feb-2017 |
Ingo Molnar <mingo@kernel.org> |
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> We are going to split <linux/sched/signal.h> out of <linux/sched.h>, which will have to be picked up from other headers and a couple of .c files. Create a trivial placeholder <linux/sched/signal.h> file that just maps to <linux/sched.h> to make this patch obviously correct and bisectable. Include the new header in the files that are going to need it. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
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#
6774def6 |
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05-Nov-2014 |
Masanari Iida <standby24x7@gmail.com> |
treewide: fix typo in printk and Kconfig This patch fix spelling typo in printk and Kconfig within various part of kernel sources. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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#
87f03cc3 |
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21-May-2014 |
Manuel Schölling <manuel.schoelling@gmx.de> |
mISDN: Use mod_timer() The code for resetting the timer can be simplified if mod_timer() is used instead of del_timer() followed by add_timer(). Signed-off-by: Manuel Schölling <manuel.schoelling@gmx.de> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
0797fb08 |
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21-May-2014 |
Manuel Schölling <manuel.schoelling@gmx.de> |
mISDN: Use time_before() To be future-proof and for better readability the time comparisons are modified to use time_before() instead of plain, error-prone math. Signed-off-by: Manuel Schölling <manuel.schoelling@gmx.de> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
d82603c6 |
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27-Dec-2012 |
Jorrit Schippers <jorrit@ncode.nl> |
treewide: Replace incomming with incoming in all comments and strings Signed-off-by: Jorrit Schippers <jorrit@ncode.nl> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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#
0f15b151 |
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24-Oct-2012 |
Alan Cox <alan@linux.intel.com> |
isdn: remove dead code multi is assigned to 0 and then acts as a constant. Remove the dead code. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
034005a0 |
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15-May-2012 |
Karsten Keil <kkeil@linux-pingi.de> |
mISDN: Allow to set a minimum length for transparent data If the FIFO of the card is small, many short messages are queued up to the upper layers and the userspace. This change allows the applications to set a minimum datalen they want from the drivers. Create a common control function to avoid code duplication in each driver. Signed-off-by: Karsten Keil <kkeil@linux-pingi.de> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
475be4d8 |
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19-Feb-2012 |
Joe Perches <joe@perches.com> |
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
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#
b5d5843a |
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26-Jan-2012 |
Akinobu Mita <akinobu.mita@gmail.com> |
mISDN: use memchr_inv Use memchr_inv to check if the data contains all same bytes. It is faster than looping for each byte. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Karsten Keil <isdn@linux-pingi.de> Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
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#
25985edc |
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30-Mar-2011 |
Lucas De Marchi <lucas.demarchi@profusion.mobi> |
Fix common misspellings Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
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#
0d26aa70 |
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24-Dec-2010 |
Tejun Heo <tj@kernel.org> |
mISDN: don't use flush_scheduled_work() flush_scheduled_work() is deprecated and scheduled to be removed. Directly flush ch->workq when freeing channel and cancel it on release. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Karsten Keil <isdn@linux-pingi.de> Cc: netdev@vger.kernel.org
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#
f7df0b8d |
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05-Aug-2010 |
Julia Lawall <julia@diku.dk> |
drivers/isdn: Adjust confusing if indentation In hisax/hfc_sx.c and mISDN/l1oip_core.c, the code after the if is outdented so that it is not aligned with the if branch. In mISDN/dsp_cmx.c, an else is added between the original if branch and the following statement, in line with the code following it. Without this change, the first assignment to dsp->rx_W has no useful effect. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r disable braces4@ position p1,p2; statement S1,S2; @@ ( if (...) { ... } | if (...) S1@p1 S2@p2 ) @script:python@ p1 << r.p1; p2 << r.p2; @@ if (p1[0].column == p2[0].column): cocci.print_main("branch",p1) cocci.print_secs("after",p2) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
5a0e3ad6 |
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24-Mar-2010 |
Tejun Heo <tj@kernel.org> |
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
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#
1537a363 |
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29-Jan-2010 |
Daniel Mack <daniel@caiaq.de> |
tree-wide: fix 'lenght' typo in comments and code Some misspelled occurences of 'octet' and some comments were also fixed as I was on it. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Jiri Kosina <trivial@kernel.org> Cc: Joe Perches <joe@perches.com> Cc: Junio C Hamano <gitster@pobox.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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#
edf86baa |
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11-Dec-2009 |
Adam Buchbinder <adam.buchbinder@gmail.com> |
Fix misspellings of "separate" in strings. Some string messages misspell "separate"; this fixes them. No change in functionality. Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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#
01a1e7ec |
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18-Dec-2009 |
Yong Zhang <yong.zhang0@gmail.com> |
mISDN: use DECLARE_COMPLETION_ONSTACK for non-constant completion The _ONSTACK variant should be used for on-stack completion, otherwise it will break lockdep. Signed-off-by: Yong Zhang <yong.zhang0@gmail.com> Acked-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
b564afcf |
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27-Jul-2009 |
Andreas Eversberg <andreas@eversberg.eu> |
mISDN: Fix handling of receive buffer size in L1oIP The size of receive buffer pointer was used to get size of receive buffer instead of recvbuf_size itself, so only 4/8 bytes could be transfered. This is a regression to 2.6.30 introduced by commit 8c90e11e3543d7de612194a042a148caeaab5f1d mISDN: Use kernel_{send,recv}msg instead of open coding Signed-off-by: Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
9bfdac94 |
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30-Jul-2009 |
roel kluin <roel.kluin@gmail.com> |
mISDN: Read buffer overflow Check whether index is within bounds before testing the element. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Acked-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
ce4adcc6 |
|
27-Jul-2009 |
Andreas Eversberg <andreas@eversberg.eu> |
mISDN: Fix handling of receive buffer size in L1oIP The size of receive buffer pointer was used to get size of receive buffer instead of recvbuf_size itself, so only 4/8 bytes could be transfered. This is a regression to 2.6.30 introduced by commit 8c90e11e3543d7de612194a042a148caeaab5f1d ("mISDN: Use kernel_{send,recv}msg instead of open coding") Signed-off-by: Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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#
8c90e11e |
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22-May-2009 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
mISDN: Use kernel_{send,recv}msg instead of open coding Reducing the number of direct users of sock_{recv,send}msg. Modified version to match the latest context. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
eac74af9 |
|
22-May-2009 |
Karsten Keil <keil@b1-systems.de> |
mISDN: Cleanup debug messages This patch make debug printk's KERN_DEBUG and also fix some codestyle issues. Signed-off-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
3dc40393 |
|
22-May-2009 |
Frank Seidel <frank@f-seidel.de> |
mISDN: Add allocation of recvbuf[1500] at run time to reduce stack size Before: 1656 bytes on i386, now 164. Modified by Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Frank Seidel <frank@f-seidel.de> Signed-off-by: Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
b36b654a |
|
15-Aug-2008 |
Matthias Urlichs <smurf@smurf.noris.de> |
mISDN: Create /sys/class/mISDN Create /sys/class/mISDN and implement functions to handle device renames. Signed-Off-By: Matthias Urlichs <matthias@urlichs.de> Signed-off-by: Karsten Keil <kkeil@suse.de>
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#
1b36c78f |
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20-Sep-2008 |
Andreas Eversberg <andreas@eversberg.eu> |
mISDN: Minor fixes minor typo fix compiler warning fix Signed-off-by: Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Karsten Keil <kkeil@suse.de>
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#
1b4d3312 |
|
13-Sep-2008 |
Andreas Eversberg <andreas@eversberg.eu> |
mISDN: Fix deactivation, if peer IP is removed from l1oip instance. Added GETPEER operation. Socket now checks if device is already busy at a differen mode. Signed-off-by: Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Karsten Keil <kkeil@suse.de>
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#
863a76e5 |
|
12-Dec-2008 |
Hannes Eder <hannes@hanneseder.net> |
mISDN: fix sparse warning: symbol 'id' shadows an earlier one Impact: rename function scope variable Fix this warning: drivers/isdn/mISDN/l1oip_core.c:472:8: warning: symbol 'id' shadows an earlier one drivers/isdn/mISDN/l1oip_core.c:254:14: originally declared here Signed-off-by: Hannes Eder <hannes@hanneseder.net> Acked-by: Karsten Keil <kkeil@suse.de> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
ff4cc1de |
|
30-Jul-2008 |
Karsten Keil <kkeil@suse.de> |
mISDN cleanup user interface The channelmap should have the same size on 32 and 64 bit systems and should not depend on endianess. Thanks to David Woodhouse for spotting this. Signed-off-by: Karsten Keil <kkeil@suse.de>
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#
3712b42d |
|
26-Jul-2008 |
Karsten Keil <kkeil@suse.de> |
Add layer1 over IP support Implement a ISDN over IP tunnel to use mISDN hardware on remote locations. Signed-off-by: Karsten Keil <kkeil@suse.de>
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