Merge more updates from Andrew Morton:
- a few block updates that fell in my lap
- lib/ updates
- checkpatch
- autofs
- ipc
- a ton of misc other things
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (100 commits)
mm: split gfp_mask and mapping flags into separate fields
fs: use mapping_set_error instead of opencoded set_bit
treewide: remove redundant #include <linux/kconfig.h>
hung_task: allow hung_task_panic when hung_task_warnings is 0
kthread: add kerneldoc for kthread_create()
kthread: better support freezable kthread workers
kthread: allow to modify delayed kthread work
kthread: allow to cancel kthread work
kthread: initial support for delayed kthread work
kthread: detect when a kthread work is used by more workers
kthread: add kthread_destroy_worker()
kthread: add kthread_create_worker*()
kthread: allow to call __kthread_create_on_node() with va_list args
kthread/smpboot: do not park in kthread_create_on_cpu()
kthread: kthread worker API cleanup
kthread: rename probe_kthread_data() to kthread_probe_data()
scripts/tags.sh: enable code completion in VIM
mm: kmemleak: avoid using __va() on addresses that don't have a lowmem mapping
kdump, vmcoreinfo: report memory sections virtual addresses
ipc/sem.c: add cond_resched in exit_sme
...
Kernel source files need not include <linux/kconfig.h> explicitly
because the top Makefile forces to include it with:
-include $(srctree)/include/linux/kconfig.h
This commit removes explicit includes except the following:
* arch/s390/include/asm/facilities_src.h
* tools/testing/radix-tree/linux/kernel.h
These two are used for host programs.
Link: http://lkml.kernel.org/r/1473656164-11929-1-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The hardware does not decode the 16, 20 or 24 bit variety.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
These i2c_algorithm structures are only stored in the alg field of an
i2c_adapter structure, which is declared as const. This declare the
structures as const as well.
The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct i2c_algorithm i@p = { ... };
@ok@
identifier r.i;
struct i2c_adapter e;
position p;
@@
e.alg = &i@p;
@bad@
position p != {r.p,ok.p};
identifier r.i;
@@
i@p
@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
struct i2c_algorithm i = { ... };
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
kmalloc will print enough information in case of failure.
Signed-off-by: Wolfram Sang <wsa-dev@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
kmalloc will print enough information in case of failure.
Signed-off-by: Wolfram Sang <wsa-dev@sang-engineering.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The workqueue "workqueue" is involved in transmitting hdpvr buffers.
It has a single work item(&dev->worker) and hence doesn't require
ordering. Also, it is not being used on a memory reclaim path. Hence,
the singlethreaded workqueue has been replaced with the use of system_wq.
System workqueues have been able to handle high level of concurrency
for a long time now and hence it's not required to have a singlethreaded
workqueue just to gain concurrency. Unlike a dedicated per-cpu workqueue
created with create_singlethread_workqueue(), system_wq allows multiple
work items to overlap executions even on the same CPU; however, a
per-cpu workqueue doesn't have any CPU locality or global ordering
guarantee unless the target CPU is explicitly specified and thus the
increase of local concurrency shouldn't make any difference.
Work item has been flushed in hdpvr_device_release() to ensure
that there are no pending tasks while disconnecting the driver.
Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The i2c client pointer is only used when CONFIG_I2C is set, and
otherwise produces a compile-time warning:
drivers/media/usb/hdpvr/hdpvr-core.c: In function 'hdpvr_probe':
drivers/media/usb/hdpvr/hdpvr-core.c:276:21: error: unused variable 'client' [-Werror=unused-variable]
This uses the same #ifdef to hide the variable when the code using
it is hidden.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Let us return directly if the element "status" of the variable "buf"
indicates "BUFSTAT_READY".
A check repetition can be excluded for the variable "ret" at the end then.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add the new match_reduced_fps argument to v4l2_match_dv_timings().
Depending on the situation you may or may not desire to match the
reduced_fps flag. Typically only HDMI transmitters will need to
check for this flag.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Currently, include/media is messy, as it contains both the V4L2 core
headers and some driver-specific headers on the same place. That makes
harder to identify what core headers should be documented and what
headers belong to I2C drivers that are included only by bridge/main
drivers that would require the functions provided by them.
Let's move those i2c specific files to its own subdirectory.
The files to move were produced via the following script:
mkdir include/media/i2c
(cd include/media; for i in *.h; do n=`echo $i|sed s/.h$/.c/`; if [ -e ../../drivers/media/i2c/$n ]; then echo $i; git mv $i i2c/; fi; done)
(cd include/media; for i in *.h; do n=`echo $i|sed s/.h$/.c/`; if [ -e ../../drivers/media/*/i2c/$n ]; then echo $i; git mv $i i2c/; fi; done)
for i in include/media/*.h; do n=`basename $i`; (for j in $(git grep -l $n); do dirname $j; done)|sort|uniq|grep -ve '^.$' > list; num=$(wc -l list|cut -d' ' -f1); if [ $num == 1 ]; then if [ "`grep i2c list`" != "" ]; then git mv $i include/media/i2c; fi; fi; done
And the references corrected via this script:
MAIN_DIR="media/"
PREV_DIR="media/"
DIRS="i2c/"
echo "Checking affected files" >&2
for i in $DIRS; do
for j in $(find include/$MAIN_DIR/$i -type f -name '*.h'); do
n=`basename $j`
git grep -l $n
done
done|sort|uniq >files && (
echo "Handling files..." >&2;
echo "for i in \$(cat files|grep -v Documentation); do cat \$i | \\";
(
cd include/$MAIN_DIR;
for j in $DIRS; do
for i in $(ls $j); do
echo "perl -ne 's,(include [\\\"\\<])$PREV_DIR($i)([\\\"\\>]),\1$MAIN_DIR$j\2\3,; print \$_' |\\";
done;
done;
echo "cat > a && mv a \$i; done";
);
echo "Handling documentation..." >&2;
echo "for i in MAINTAINERS \$(cat files); do cat \$i | \\";
(
cd include/$MAIN_DIR;
for j in $DIRS; do
for i in $(ls $j); do
echo " perl -ne 's,include/$PREV_DIR($i)\b,include/$MAIN_DIR$j\1,; print \$_' |\\";
done;
done;
echo "cat > a && mv a \$i; done"
);
) >script && . ./script
Merged Sakari Ailus patch that moves smiapp.h to include/media/i2c.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Embed the video_device struct to simplify the error handling and in
order to (eventually) get rid of video_device_alloc/release.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
There is no need to use hex_dump_to_buffer() since we have a kernel helper to
dump up to 64 bytes just via printk().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
* .: (268 commits)
Linux 3.16-rc6
um: segv: Save regs only in case of a kernel mode fault
um: Fix hung task in fix_range_common()
um: Ensure that a stub page cannot get unmapped
Revert "um: Fix wait_stub_done() error handling"
btrfs: test for valid bdev before kobj removal in btrfs_rm_device
Btrfs: fix abnormal long waiting in fsync
random: check for increase of entropy_count because of signed conversion
ARM: EXYNOS: Fix core ID used by platsmp and hotplug code
ahci: add support for the Promise FastTrak TX8660 SATA HBA (ahci mode)
ARM: at91/dt: add missing clocks property to pwm node in sam9x5.dtsi
ARM: at91/dt: fix usb0 clocks definition in sam9n12 dtsi
ARM: at91: at91sam9x5: correct typo error for ohci clock
irqchip: gic: Fix core ID calculation when topology is read from DT
GFS2: fs/gfs2/rgrp.c: kernel-doc warning fixes
GFS2: memcontrol: Spelling s/invlidate/invalidate/
GFS2: Allow caching of glocks for flock
GFS2: Allow flocks to use normal glock dq rather than dq_wait
GFS2: replace count*size kzalloc by kcalloc
GFS2: Use GFP_NOFS when allocating glocks
...
Conflicts:
drivers/media/dvb-frontends/si2168.c
drivers/media/dvb-frontends/si2168_priv.h
drivers/media/tuners/si2157.c
The colorspace for HDTV is REC709, not SMPTE240M.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
The v4l2_pix_format structure has no reserved field. It is embedded in
the v4l2_framebuffer structure which has no reserved fields either, and
in the v4l2_format structure which has reserved fields that were not
previously required to be zeroed out by applications.
To allow extending v4l2_pix_format, inline it in the v4l2_framebuffer
structure, and use the priv field as a magic value to indicate that the
application has set all v4l2_pix_format extended fields and zeroed all
reserved fields following the v4l2_pix_format field in the v4l2_format
structure.
The availability of this API extension is reported to userspace through
the new V4L2_CAP_EXT_PIX_FORMAT capability flag. Just checking that the
priv field is still set to the magic value at [GS]_FMT return wouldn't
be enough, as older kernels don't zero the priv field on return.
To simplify the internal API towards drivers zero the extended fields
and set the priv field to the magic value for applications not aware of
the extensions.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Since all the drivers that use `struct v4l2_fh' use the core
priority checking, the setting of the flag in the drivers can
be removed.
Signed-off-by: Ramakrishnan Muthukrishnan <ramakrmu@cisco.com>
Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
When the audio encoding is changed the driver calls hdpvr_set_audio
with the current opt->audio_input value. However, that should have
been opt->audio_input + 1. So changing the audio encoding inadvertently
changes the input as well. This bug has always been there.
The second bug was introduced in kernel 3.10 and that broke the
default_audio_input module option handling: the audio encoding was
never switched to AC3 if default_audio_input was set to 2 (SPDIF input).
In addition, since starting with 3.10 the audio encoding is always set
at the start the first bug now always happens when the driver is loaded.
In the past this bug would only surface if the user would change the
audio encoding after the driver was loaded.
Also fixes a small trivial typo (bufffer -> buffer).
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reported-by: Scott Doty <scott@corp.sonic.net>
Cc: stable@vger.kernel.org # for v3.10 and up
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
cppcheck reported memory leak in device_authorizatio()
within hdpvr-core.c.
When the debug option is specified and the code jump to
"unlock:" label, print_buf was not freed.
Confirm the module succesfully compiled without error.
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
free_buff_list and rec_buff_list are initialized in the middle of hdpvr_probe(),
but if something bad happens before that, error handling code calls hdpvr_delete(),
which contains iteration over the lists (via hdpvr_free_buffers()).
The patch moves the lists initialization to the beginning and by the way fixes
goto label in error handling of registering videodev.
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 <m.chehab@samsung.com>
Cc: stable@vger.kernel.org
It's the only function in v4l2-dv-timings.c with the v4l prefix instead
of v4l2. Make it consistent with the other functions.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Use the new defines to calculate the full blanking and frame sizes.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Scott Jiang <scott.jiang.linux@gmail.com>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
v4l2-common.c contained a bunch of dv-timings related functions.
Move that to the new v4l2-dv-timings.c which is a more appropriate
place for them.
There aren't many drivers that do HDTV, so it is a good idea to separate
common code related to that into a module of its own.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
get_video_info() should never return EFAULT, instead it should return
the low-level usb_control_msg() error. Add a valid field to the hdpvr_video_info
struct so the driver can easily check if a valid format was detected.
Whenever get_video_info is called and it returns an error (e.g. usb_control_msg
failed), then return that error to userspace as well.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Remove an unnecessary 'else' and invert a condition which makes the code
more readable.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
If no format has been detected, then querystd should return V4L2_STD_UNKNOWN,
not V4L2_STD_ALL.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Fix hdpvr build errors when CONFIG_I2C=m and VIDEO_V4L2=m and
VIDEO_HDPVR=y.
drivers/built-in.o: In function `hdpvr_disconnect':
hdpvr-core.c:(.text+0xef542): undefined reference to `v4l2_device_disconnect'
hdpvr-core.c:(.text+0xef57e): undefined reference to `i2c_del_adapter'
hdpvr-core.c:(.text+0xef58a): undefined reference to `video_unregister_device'
drivers/built-in.o: In function `hdpvr_delete':
(.text+0xef5b9): undefined reference to `video_device_release'
drivers/built-in.o: In function `hdpvr_probe':
hdpvr-core.c:(.text+0xef63a): undefined reference to `v4l2_device_register'
hdpvr-core.c:(.text+0xefd97): undefined reference to `i2c_del_adapter'
drivers/built-in.o: In function `hdpvr_s_ctrl':
hdpvr-video.c:(.text+0xf03c0): undefined reference to `v4l2_ctrl_activate'
drivers/built-in.o: In function `hdpvr_device_release':
hdpvr-video.c:(.text+0xf0470): undefined reference to `v4l2_device_unregister'
hdpvr-video.c:(.text+0xf0479): undefined reference to `v4l2_ctrl_handler_free'
hdpvr-video.c:(.text+0xf048f): undefined reference to `i2c_del_adapter'
drivers/built-in.o: In function `hdpvr_open':
hdpvr-video.c:(.text+0xf0570): undefined reference to `video_devdata'
hdpvr-video.c:(.text+0xf057b): undefined reference to `v4l2_fh_init'
hdpvr-video.c:(.text+0xf0583): undefined reference to `v4l2_fh_add'
drivers/built-in.o: In function `video_drvdata':
hdpvr-video.c:(.text+0xf08a0): undefined reference to `video_devdata'
drivers/built-in.o: In function `vidioc_s_dv_timings':
hdpvr-video.c:(.text+0xf0d34): undefined reference to `v4l_match_dv_timings'
drivers/built-in.o: In function `hdpvr_poll':
hdpvr-video.c:(.text+0xf1455): undefined reference to `v4l2_ctrl_poll'
drivers/built-in.o: In function `hdpvr_release':
hdpvr-video.c:(.text+0xf18f6): undefined reference to `v4l2_fh_release'
drivers/built-in.o: In function `hdpvr_register_videodev':
(.text+0xf1be3): undefined reference to `v4l2_ctrl_handler_init_class'
drivers/built-in.o: In function `hdpvr_register_videodev':
(.text+0xf1c19): undefined reference to `v4l2_ctrl_new_std'
drivers/built-in.o: In function `hdpvr_register_videodev':
(.text+0xf1c42): undefined reference to `v4l2_ctrl_new_std'
drivers/built-in.o: In function `hdpvr_register_videodev':
(.text+0xf1c6b): undefined reference to `v4l2_ctrl_new_std'
drivers/built-in.o: In function `hdpvr_register_videodev':
(.text+0xf1cac): undefined reference to `v4l2_ctrl_new_std'
drivers/built-in.o: In function `hdpvr_register_videodev':
(.text+0xf1cd5): undefined reference to `v4l2_ctrl_new_std'
drivers/built-in.o:(.text+0xf1cfe): more undefined references to `v4l2_ctrl_new_std' follow
drivers/built-in.o: In function `hdpvr_register_videodev':
(.text+0xf1d75): undefined reference to `v4l2_ctrl_new_std_menu'
drivers/built-in.o: In function `hdpvr_register_videodev':
(.text+0xf1d9e): undefined reference to `v4l2_ctrl_new_std_menu'
drivers/built-in.o: In function `hdpvr_register_videodev':
(.text+0xf1dc3): undefined reference to `v4l2_ctrl_new_std_menu'
drivers/built-in.o: In function `hdpvr_register_videodev':
(.text+0xf1de5): undefined reference to `v4l2_ctrl_new_std_menu'
drivers/built-in.o: In function `hdpvr_register_videodev':
(.text+0xf1e18): undefined reference to `v4l2_ctrl_new_std'
drivers/built-in.o: In function `hdpvr_register_videodev':
(.text+0xf1e4b): undefined reference to `v4l2_ctrl_new_std'
drivers/built-in.o: In function `hdpvr_register_videodev':
(.text+0xf1e90): undefined reference to `v4l2_ctrl_cluster'
drivers/built-in.o: In function `hdpvr_register_videodev':
(.text+0xf1e98): undefined reference to `v4l2_ctrl_handler_setup'
drivers/built-in.o: In function `hdpvr_register_videodev':
(.text+0xf1ec1): undefined reference to `video_device_alloc'
drivers/built-in.o: In function `hdpvr_register_videodev':
(.text+0xf1f85): undefined reference to `__video_register_device'
drivers/built-in.o: In function `hdpvr_register_videodev':
(.text+0xf1fac): undefined reference to `v4l2_ctrl_handler_free'
drivers/built-in.o: In function `hdpvr_register_ir_tx_i2c':
(.text+0xf238f): undefined reference to `i2c_new_device'
drivers/built-in.o: In function `hdpvr_register_ir_rx_i2c':
(.text+0xf2434): undefined reference to `i2c_new_device'
drivers/built-in.o: In function `hdpvr_register_i2c_adapter':
(.text+0xf2514): undefined reference to `i2c_add_adapter'
drivers/built-in.o:(.rodata+0x1b368): undefined reference to `video_ioctl2'
drivers/built-in.o:(.rodata+0x1b690): undefined reference to `v4l2_ctrl_log_status'
drivers/built-in.o:(.rodata+0x1b6f8): undefined reference to `v4l2_ctrl_subscribe_event'
drivers/built-in.o:(.rodata+0x1b700): undefined reference to `v4l2_event_unsubscribe'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Both MythTV and gstreamer expect that they can set/get/query/enumerate the
standards, even if the input is the component input for which standards
really do not apply.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This is the latest firmware version and - it seems - the most reliable.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Video nodes can be used at once after registration, so make sure the full
initialization is done before registering them.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This prepares the driver for priority and control event handling.
This patch also checks for correct streaming ownership and it makes a
small improvement to the encoder_cmd ioctls: always zero 'flags' and
drop the memset of 'raw' as that is already done by the v4l2 core.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This ioctl is defined as IOW, so pass the argument by value instead of by
reference. I could have chosen to add const instead, but this is 1) easier
to handle in drivers and 2) consistent with the s_std subdev operation.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
As reported by Geert Uytterhoeven <geert@linux-m68k.org>:
drivers/media/usb/hdpvr/hdpvr-video.c: warning: "CONFIG_I2C_MODULE" is not defined [-Wundef]
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Thanks-to: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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>
Convert a nonnegative error return code to a negative one, as returned
elsewhere in the function.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The RC_TYPE_* defines are currently used both where a single protocol is
expected and where a bitmap of protocols is expected.
Functions like rc_keydown() and functions which add/remove entries to the
keytable want a single protocol. Future userspace APIs would also
benefit from numeric protocols (rather than bitmap ones). Keytables are
smaller if they can use a small(ish) integer rather than a bitmap.
Other functions or struct members (e.g. allowed_protos,
enabled_protocols, etc) accept multiple protocols and need a bitmap.
Using different types reduces the risk of programmer error. Using a
protocol enum whereever possible also makes for a more future-proof
user-space API as we don't need to worry about a sufficient number of
bits being available (e.g. in structs used for ioctl() calls).
The use of both a number and a corresponding bit is dalso one in e.g.
the input subsystem as well (see all the references to set/clear bit when
changing keytables for example).
This patch separate the different usages in preparation for
upcoming patches.
Where a single protocol is expected, enum rc_type is used; where one or more
protocol(s) are expected, something like u64 is used.
The patch has been rewritten so that the format of the sysfs "protocols"
file is no longer altered (at the loss of some detail). The file itself
should probably be deprecated in the future though.
Signed-off-by: David Härdeman <david@hardeman.nu>
Cc: Andy Walls <awalls@md.metrocast.net>
Cc: Maxim Levitsky <maximlevitsky@gmail.com>
Cc: Antti Palosaari <crope@iki.fi>
Cc: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Write-only ioctls should have a const argument in the ioctl op.
Do this conversion for vidioc_s_audio.
Adding const for write-only ioctls was decided during the 2012 Media Workshop.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Linus Torvalds