media: wl128x: Fix spelling mistake "Transfered" -> "Transferred"

There is a spelling mistake in a fmdbg message. Fix it.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
[hverkuil: split overly long line over two lines]

media: wl128x: fix a clang warning

Clang-16 produces this warning, which is fatal with CONFIG_WERROR:

../drivers/media/radio/wl128x/fmdrv_common.c:1237:19: error: variable 'cmd_cnt' set but not used [-Werror,-Wunused-but-set-variable]
int ret, fw_len, cmd_cnt;
^
1 error generated.

What happens is that cmd_cnt tracks the amount of firmware data packets
were transfered, which is printed only when debug is used.

Switch to use the firmware count, as the message is all about reporting
a partial firmware transfer.

Link: https://lore.kernel.org/linux-media/6badd27ebfa718d5737f517f18b29a3e0f6e43f8.1687981726.git.mchehab@kernel.org

Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

media: radio/wl128x: remove unnecessary (void*) conversions

The void * type pointer does not need to be cast.

Signed-off-by: Zhou jie <zhoujie@nfschina.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

media: wl128x: use time_is_before_jiffies() instead of open coding it

Use the helper function time_is_{before,after}_jiffies() to improve
code readability.

Signed-off-by: Wang Qing <wangqing@vivo.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

media: wl128x: get rid of a potential spectre issue

As reported by smatch:
drivers/media/radio/wl128x/fmdrv_common.c:736 fm_irq_handle_rdsdata_getcmd_resp() warn: potential spectre issue 'rds_fmt.data.groupdatabuff.buff>

Address it by using array_index_nospec().

While here, reorder the linux/ includes.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: media/radio: wl128x: 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>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174

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 version 2 as
published by the free software foundation 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

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 655 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

media: wl128x: Fix some error handling in fmc_prepare()

The st_register() returns have changed over time, but these days it
never returns -1. We should just be checking for any negative error
codes.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

media: wl128x: prevent two potential buffer overflows

Smatch marks skb->data as untrusted so it warns that "evt_hdr->dlen"
can copy up to 255 bytes and we only have room for two bytes. Even
if this comes from the firmware and we trust it, the new policy
generally is just to fix it as kernel hardenning.

I can't test this code so I tried to be very conservative. I considered
not allowing "evt_hdr->dlen == 1" because it doesn't initialize the
whole variable but in the end I decided to allow it and manually
initialized "asic_id" and "asic_ver" to zero.

Fixes: e8454ff7b9a4 ("[media] drivers:media:radio: wl128x: FM Driver Common sources")

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

media: wl128x: Fix an error code in fm_download_firmware()

We forgot to set "ret" on this error path.

Fixes: e8454ff7b9a4 ("[media] drivers:media:radio: wl128x: FM Driver Common sources")

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

media: a few more typos at staging, pci, platform, radio and usb

Those typos were left over from codespell check, on
my first pass or belong to code added after the time I
ran it.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

media: wl128x: fix spelling mistake: "Swtich" -> "Switch"

There is a spelling mistake in a fmdbg debug message. Fix it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

media: radio: 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: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

networking: make skb_put & friends return void pointers

It seems like a historic accident that these return unsigned char *,
and in many places that means casts are required, more often than not.

Make these functions (skb_put, __skb_put and pskb_put) return void *
and remove all the casts across the tree, adding a (u8 *) cast only
where the unsigned char pointer was used directly, all done with the
following spatch:

@@
expression SKB, LEN;
typedef u8;
identifier fn = { skb_put, __skb_put };
@@
- *(fn(SKB, LEN))
+ *(u8 *)fn(SKB, LEN)

@@
expression E, SKB, LEN;
identifier fn = { skb_put, __skb_put };
type T;
@@
- E = ((T *)(fn(SKB, LEN)))
+ E = fn(SKB, LEN)

which actually doesn't cover pskb_put since there are only three
users overall.

A handful of stragglers were converted manually, notably a macro in
drivers/isdn/i4l/isdn_bsdcomp.c and, oddly enough, one of the many
instances in net/bluetooth/hci_sock.c. In the former file, I also
had to fix one whitespace problem spatch introduced.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

networking: introduce and use skb_put_data()

A common pattern with skb_put() is to just want to memcpy()
some data into the new space, introduce skb_put_data() for
this.

An spatch similar to the one for skb_put_zero() converts many
of the places using it:

@@
identifier p, p2;
expression len, skb, data;
type t, t2;
@@
(
-p = skb_put(skb, len);
+p = skb_put_data(skb, data, len);
|
-p = (t)skb_put(skb, len);
+p = skb_put_data(skb, data, len);
)
(
p2 = (t2)p;
-memcpy(p2, data, len);
|
-memcpy(p, data, len);
)

@@
type t, t2;
identifier p, p2;
expression skb, data;
@@
t *p;
...
(
-p = skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
|
-p = (t *)skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
)
(
p2 = (t2)p;
-memcpy(p2, data, sizeof(*p));
|
-memcpy(p, data, sizeof(*p));
)

@@
expression skb, len, data;
@@
-memcpy(skb_put(skb, len), data, len);
+skb_put_data(skb, data, len);

(again, manually post-processed to retain some comments)

Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

[media] wl128x: 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: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

[media] media: Drop FSF's postal address from the source code files

Drop the FSF's postal address from the source code files that typically
contain mostly the license text. Of the 628 removed instances, 578 are
outdated.

The patch has been created with the following command without manual edits:

git grep -l "675 Mass Ave\|59 Temple Place\|51 Franklin St" -- \
drivers/media/ include/media|while read i; do i=$i perl -e '
open(F,"< $ENV{i}");
$a=join("", <F>);
$a =~ s/[ \t]*\*\n.*You should.*\n.*along with.*\n.*(\n.*USA.*$)?\n//m
&& $a =~ s/(^.*)Or, (point your browser to) /$1To obtain the license, $2\n$1/m;
close(F);
open(F, "> $ENV{i}");
print F $a;
close(F);'; done

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>

[media] wl128x: use KERNEL_CONT where needed

Some continuation messages are not using KERNEL_CONT.

Since commit 563873318d32 ("Merge branch 'printk-cleanups"),
this won't work as expected anymore. So, let's add KERN_CONT
to those lines.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

[media] wl128x: don't break long lines

Due to the 80-cols restrictions, and latter due to checkpatch
warnings, several strings were broken into multiple lines. This
is not considered a good practice anymore, as it makes harder
to grep for strings at the source code.

As we're right now fixing other drivers due to KERN_CONT, we need
to be able to identify what printk strings don't end with a "\n".
It is a way easier to detect those if we don't break long lines.

So, join those continuation lines.

The patch was generated via the script below, and manually
adjusted if needed.

</script>
use Text::Tabs;
while (<>) {
if ($next ne "") {
$c=$_;
if ($c =~ /^\s+\"(.*)/) {
$c2=$1;
$next =~ s/\"\n$//;
$n = expand($next);
$funpos = index($n, '(');
$pos = index($c2, '",');
if ($funpos && $pos > 0) {
$s1 = substr $c2, 0, $pos + 2;
$s2 = ' ' x ($funpos + 1) . substr $c2, $pos + 2;
$s2 =~ s/^\s+//;

$s2 = ' ' x ($funpos + 1) . $s2 if ($s2 ne "");

print unexpand("$next$s1\n");
print unexpand("$s2\n") if ($s2 ne "");
} else {
print "$next$c2\n";
}
$next="";
next;
} else {
print $next;
}
$next="";
} else {
if (m/\"$/) {
if (!m/\\n\"$/) {
$next=$_;
next;
}
}
}
print $_;
}
</script>

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers: misc: ti-st: Use int instead of fuzzy char for callback status

On mips and parisc:

drivers/bluetooth/btwilink.c: In function 'ti_st_open':
drivers/bluetooth/btwilink.c:174:21: warning: overflow in implicit constant conversion [-Woverflow]
hst->reg_status = -EINPROGRESS;

drivers/nfc/nfcwilink.c: In function 'nfcwilink_open':
drivers/nfc/nfcwilink.c:396:31: warning: overflow in implicit constant conversion [-Woverflow]
drv->st_register_cb_status = -EINPROGRESS;

There are actually two issues:
1. Whether "char" is signed or unsigned depends on the architecture.
As the completion callback data is used to pass a (negative) error
code, it should always be signed.
2. EINPROGRESS is 150 on mips, 245 on parisc.
Hence -EINPROGRESS doesn't fit in a signed 8-bit number.

Change the callback status from "char" to "int" to fix these.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

[media] wl128x: fix typo in MODULE_PARM_DESC

The module_param() is "default_rds_buf" and the MODULE_PARM_DESC()
should match.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

[media] wl128x: use swap() in fm_rdsparse_swapbytes()

Use kernel.h macro definition.

Thanks to Julia Lawall for Coccinelle scripting support.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

[media] wl128x: fix fmdbg compiler warning

fmdrv_common.c: In function 'fm_download_firmware':
fmdrv_common.c:1259:2: warning: format '%d' expects argument of type 'int', but argument 3 has type 'size_t' [-Wformat=]
fmdbg("Firmware(%s) length : %d bytes\n", fw_name, fw_entry->size);
^

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

[media] wl128x: fix sparse warnings

drivers/media/radio/wl128x/fmdrv_common.c:598:32: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:598:32: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:598:32: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:598:32: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:767:38: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:767:38: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:767:38: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:767:38: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:992:21: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:992:21: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:992:21: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:992:21: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:443:41: warning: incorrect type in assignment (different base types)
drivers/media/radio/wl128x/fmdrv_common.c:1359:17: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:1359:17: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:1359:17: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:1359:17: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:1359:39: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:1359:39: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:1359:39: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:1359:39: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:1368:25: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:1368:25: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:1368:25: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:1368:25: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:1368:47: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:1368:47: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:1368:47: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_common.c:1368:47: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_rx.c:119:20: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_rx.c:119:20: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_rx.c:119:20: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_rx.c:119:20: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_rx.c:192:20: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_rx.c:192:20: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_rx.c:192:20: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_rx.c:192:20: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_rx.c:288:28: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_rx.c:288:28: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_rx.c:288:28: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_rx.c:288:28: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_rx.c:534:20: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_rx.c:534:20: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_rx.c:534:20: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_rx.c:534:20: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_rx.c:625:17: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_rx.c:625:17: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_rx.c:625:17: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_rx.c:625:17: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_tx.c:377:20: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_tx.c:377:20: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_tx.c:377:20: warning: cast to restricted __be16
drivers/media/radio/wl128x/fmdrv_tx.c:377:20: warning: cast to restricted __be16

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

[media] fmdrv_common: fix sparse warning

drivers/media/radio/wl128x/fmdrv_common.c:178:6: warning: symbol 'g_st_write' was not declared. Should it be static?

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

[media] wl128x: do not call copy_to_user() while holding spinlocks

copy_to_user() must not be called with spinlocks held, but it is in
fmc_transfer_rds_from_internal_buff().
The patch copies data to tmpbuf, releases spinlock and then passes it to userspace.
By the way there is a small unification: replace a couple of hardcoded constants by a macro.
Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

[media] wl128x: Replace memcpy with struct assignment

This kind of memcpy() is error-prone. Its replacement with a struct
assignment is prefered because it's type-safe and much easier to read.
Found by coccinelle. Hand patched and reviewed.
Tested by compilation only.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
identifier struct_name;
struct struct_name to;
struct struct_name from;
expression E;
@@
-memcpy(&(to), &(from), E);
+to = from;
// </smpl>

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Ezequiel Garcia <elezegarcia@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

[media] fmdrv: Don't check if unsigned are below zero

drivers/media/radio/wl128x/fmdrv_common.c:745:3: warning: comparison is always false due to limited range of data type [-Wtype-limits]
drivers/media/radio/wl128x/fmdrv_rx.c:308:2: warning: comparison is always false due to limited range of data type [-Wtype-limits]

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

[media] wl128x: fmdrv_common: fix signedness bugs

Message-Id: <1322820073-19347-2-git-send-email-xi.wang@gmail.com>

The error handling with (ret < 0) didn't work where ret is a u32.
Use int instead. To be consistent we also change the functions to
return an int.

Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

[media] radio: wl128x: Update registration process with ST

As underlying ST driver registration API's have changed with
latest 2.6.38-rc8 kernel this patch will update the FM driver
accordingly.

Signed-off-by: Manjunatha Halli <manjunatha_halli@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>

[media] fmdrv_common.c: fix compiler warning

drivers/media/radio/wl128x/fmdrv_common.c: In function 'recv_tasklet':
drivers/media/radio/wl128x/fmdrv_common.c:274:4: warning: format '%d' expects type 'int', but argument 4 has type 'long unsigned int'

The result of sizeof() should be printed with %zu.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

[media] drivers:media:radio: wl128x: FM Driver Common sources

These are the sources for the common interfaces required by the
FM V4L2 driver for TI WL127x and WL128x chips.

These implement the FM channel-8 protocol communication with the
chip. This makes use of the Shared Transport as its transport.

Signed-off-by: Manjunatha Halli <manjunatha_halli@ti.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>