Use codespell to fix lots of typos over frontends.
Manually verified to avoid false-positives.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
The epoll function expects that whenever the poll file op is
called, the poll_wait function is also called. That didn't
always happen in dvb_demux_poll(), dvb_dvr_poll() and
dvb_ca_en50221_io_poll(). Fix this, otherwise epoll()
can timeout when it shouldn't.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reviewed-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
As we did an internal change inside the subsystem to always
represent min/max frequencies in Hz, add a debug message, as this
would help to discover bugs on drivers, if any.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
The dvb_frontend dprintk() macro already prints __func__. So,
we don't need to add it again at the printed message.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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Merge tag 'media/v4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull new experimental media request API from Mauro Carvalho Chehab:
"A new media request API
This API is needed to support device drivers that can dynamically
change their parameters for each new frame. The latest versions of
Google camera and codec HAL depends on such feature.
At this stage, it supports only stateless codecs.
It has been discussed for a long time (at least over the last 3-4
years), and we finally reached to something that seem to work.
This series contain both the API and core changes required to support
it and a new m2m decoder driver (cedrus).
As the current API is still experimental, the only real driver using
it (cedrus) was added at staging[1]. We intend to keep it there for a
while, in order to test the API. Only when we're sure that this API
works for other cases (like encoders), we'll move this driver out of
staging and set the API into a stone.
[1] We added support for the vivid virtual driver (used only for
testing) to it too, as it makes easier to test the API for the ones
that don't have the cedrus hardware"
* tag 'media/v4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (53 commits)
media: dt-bindings: Document the Rockchip VPU bindings
media: platform: Add Cedrus VPU decoder driver
media: dt-bindings: media: Document bindings for the Cedrus VPU driver
media: v4l: Add definition for the Sunxi tiled NV12 format
media: v4l: Add definitions for MPEG-2 slice format and metadata
media: videobuf2-core: Rework and rename helper for request buffer count
media: v4l2-ctrls.c: initialize an error return code with zero
media: v4l2-compat-ioctl32.c: add missing documentation for a field
media: media-request: update documentation
media: media-request: EPERM -> EACCES/EBUSY
media: v4l2-ctrls: improve media_request_(un)lock_for_update
media: v4l2-ctrls: use media_request_(un)lock_for_access
media: media-request: add media_request_(un)lock_for_access
media: vb2: set reqbufs/create_bufs capabilities
media: videodev2.h: add new capabilities for buffer types
media: buffer.rst: only set V4L2_BUF_FLAG_REQUEST_FD for QBUF
media: v4l2-ctrls: return -EACCES if request wasn't completed
media: media-request: return -EINVAL for invalid request_fds
media: vivid: add request support
media: vivid: add mc
...
On tuner pads, multiple signals are present. Be sure to get
the right PAD by using them.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
All dmx ioctls are compatible, and they are only implemented
in one file, so we can replace the list of commands in
fs/compat_ioctl.c with a single line in dmxdev.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
The strcpy() function is being deprecated upstream. Replace
it by the safer strscpy().
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
The implementation of strscpy() is more robust and safer.
That's now the recommended way to copy NUL terminated strings.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Buffers can now be prepared or queued for a request.
A buffer is unbound from the request at vb2_buffer_done time or
when the queue is cancelled.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
The userspace-provided plane data needs to be stored in
vb2_v4l2_buffer. Currently this information is applied by
__fill_vb2_buffer() which is called by the core prepare_buf
and qbuf functions, but when using requests these functions
aren't called yet since the buffer won't be prepared until
the media request is actually queued.
In the meantime this information has to be stored somewhere
and vb2_v4l2_buffer is a good place for it.
The __fill_vb2_buffer callback now just copies the relevant
information from vb2_v4l2_buffer into the planes array.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
The frequency step should take into account the tuner step,
as, if tuner step is bigger than frontend step, the zigzag
algorithm won't be doing the right thing, as it will be
tuning multiple times at the same frequency.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Right now, satellite frontend drivers specify frequencies in kHz,
while terrestrial/cable ones specify in Hz. That's confusing
for developers.
However, the main problem is that universal frontends capable
of handling both satellite and non-satelite delivery systems
are appearing. We end by needing to hack the drivers in
order to support such hybrid frontends.
So, convert everything to specify frontend frequencies in Hz.
Tested-by: Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Right now, satellite tuner drivers specify frequencies in kHz,
while terrestrial/cable ones specify in Hz. That's confusing
for developers.
However, the main problem is that universal tuners capable
of handling both satellite and non-satelite delivery systems
are appearing. We end by needing to hack the drivers in
order to support such hybrid tuners.
So, convert everything to specify tuner frequencies in Hz.
Plese notice that a similar patch is also needed for frontends.
Tested-by: Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>
Acked-by: Michael Büsch <m@bues.ch>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
The > should be >= so we don't read one element beyond the end of the
ca->slot_info[] array. The array is allocated in dvb_ca_en50221_init().
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Currently links between entities and an interface are just marked as
ENABLED. But (at least today) these links cannot be disabled by userspace
or the driver, so they should also be marked as IMMUTABLE.
It might become possible that drivers can disable such links (if for some
reason the device node cannot be used), so we might need to add a new link
flag at some point to mark interface links that can be changed by the driver
but not by userspace.
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
As we move stuff around, some doc references are broken. Fix some of
them via this script:
./scripts/documentation-file-ref-check --fix
Manually checked if the produced result is valid, removing a few
false-positives.
Acked-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Coly Li <colyli@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
slot can be controlled by user-space, hence leading to
a potential exploitation of the Spectre variant 1 vulnerability,
as warned by smatch:
drivers/media/dvb-core/dvb_ca_en50221.c:1479 dvb_ca_en50221_io_write() warn: potential spectre issue 'ca->slot_info' (local cap)
Acked-by: "Jasmin J." <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This is a core media file... it shoudn't have so many coding
style issues! The last patch ended by being submitted with
an error like that, very likely due to some cut and paste
issue.
Maybe it is time to clean it up. Do it with the auto
fix logic:
./scripts/checkpatch.pl -f drivers/media/dvb-core/dvb_frontend.c --strict --fix-inplace
Then manually fix the errors introduced by it.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This reverts 8b0e195314, because media-tree drivers should use the
API functions to initialize variables of type ktime_t.
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
which is a typedef for an enum type, but the implementation in this
driver returns an 'int'.
Fix this by returning 'netdev_tx_t' in this driver too.
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
DTV_ISDBT_LAYER_ENABLED parameter should be set to "All" by default,
instead of "None", as described in the API document.
Signed-off-by: Akihiro Tsukada <tskd08@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
As warned by smatch:
drivers/media/dvb-core/dvb_frontend.c:314 dvb_frontend_get_event() warn: inconsistent returns 'sem:&fepriv->sem'.
Locked on: line 288
line 295
line 306
line 314
Unlocked on: line 303
The lock implementation for get event is wrong, as, if an
interrupt occurs, down_interruptible() will fail, and the
routine will call up() twice when userspace calls the ioctl
again.
The bad code is there since when Linux migrated to git, in
2005.
Cc: stable@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
FE_GET_PROPERTY has always failed as following situations:
- Use compatible ioctl
- The array of 'struct dtv_property' has 2 or more items
This patch fixes wrong cast to a pointer 'struct dtv_property' from a
pointer of 2nd or after item of 'struct compat_dtv_property' array.
Signed-off-by: Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Not sure why, but, on ia64, with Linaro's gcc 7.3 compiler,
using #ifdef (CONFIG_I2C) is not OK.
So, replace it by IS_ENABLED(CONFIG_I2C), in order to fix the
builds there.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
A successful CA module initialisation isn't an error. Change the
log print to info severity accordingly.
Cc: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The dvb_attach()/dvb_detach() methods are ugly hacks designed
to keep using the I2C low-level API. The proper way is to
do I2C bus bindings instead.
Several modules were already converted to use it. Yet,
it is painful to use it, as lots of code need to be
duplicated.
Make it easier by providing two new helper functions:
- dvb_module_probe()
- dvb_module_release()
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Now that we have support for a buffer counter and for
error flags, update them at DMX_DQBUF.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Some conditions required for DVB mmap support to work are reversed.
Also, the logic is not too clear.
So, improve the logic, making it easier to be handled.
PS.: I'm pretty sure that I fixed it while testing, but, somehow,
the change got lost.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Returning -EINVAL when an ioctl is not implemented is a very
bad idea, as it is hard to distinguish from other error
contitions that an ioctl could lead. Replace it by its
right error code: -ENOTTY.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
CONFIG_DVB_MMAP was misspelled either as CONFIG_DVB_MMSP
or DVB_MMAP, so it had no effect at all. This fixes that,
to make it possible to build it again.
Fixes: 4021053ed5 ("media: dvb-core: make DVB mmap API optional")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This is the mindless scripted replacement of kernel use of POLL*
variables as described by Al, done by this script:
for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done
done
with de-mangling cleanups yet to come.
NOTE! On almost all architectures, the EPOLL* constants have the same
values as the POLL* constants do. But they keyword here is "almost".
For various bad reasons they aren't the same, and epoll() doesn't
actually work quite correctly in some cases due to this on Sparc et al.
The next patch from Al will sort out the final differences, and we
should be all done.
Scripted-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Merge tag 'media/v4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- videobuf2 was moved to a media/common dir, as it is now used by the
DVB subsystem too
- Digital TV core memory mapped support interface
- new sensor driver: ov7740
- several improvements at ddbridge driver
- new V4L2 driver: IPU3 CIO2 CSI-2 receiver unit, found on some Intel
SoCs
- new tuner driver: tda18250
- finally got rid of all LIRC staging drivers
- as we don't have old lirc drivers anymore, restruct the lirc device
code
- add support for UVC metadata
- add a new staging driver for NVIDIA Tegra Video Decoder Engine
- DVB kAPI headers moved to include/media
- synchronize the kAPI and uAPI for the DVB subsystem, removing the gap
for non-legacy APIs
- reduce the kAPI gap for V4L2
- lots of other driver enhancements, cleanups, etc.
* tag 'media/v4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (407 commits)
media: v4l2-compat-ioctl32.c: make ctrl_is_pointer work for subdevs
media: v4l2-compat-ioctl32.c: refactor compat ioctl32 logic
media: v4l2-compat-ioctl32.c: don't copy back the result for certain errors
media: v4l2-compat-ioctl32.c: drop pr_info for unknown buffer type
media: v4l2-compat-ioctl32.c: copy clip list in put_v4l2_window32
media: v4l2-compat-ioctl32.c: fix ctrl_is_pointer
media: v4l2-compat-ioctl32.c: copy m.userptr in put_v4l2_plane32
media: v4l2-compat-ioctl32.c: avoid sizeof(type)
media: v4l2-compat-ioctl32.c: move 'helper' functions to __get/put_v4l2_format32
media: v4l2-compat-ioctl32.c: fix the indentation
media: v4l2-compat-ioctl32.c: add missing VIDIOC_PREPARE_BUF
media: v4l2-ioctl.c: don't copy back the result for -ENOTTY
media: v4l2-ioctl.c: use check_fmt for enum/g/s/try_fmt
media: vivid: fix module load error when enabling fb and no_error_inj=1
media: dvb_demux: improve debug messages
media: dvb_demux: Better handle discontinuity errors
media: cxusb, dib0700: ignore XC2028_I2C_FLUSH
media: ts2020: avoid integer overflows on 32 bit machines
media: i2c: ov7740: use gpio/consumer.h instead of gpio.h
media: entity: Add a nop variant of media_entity_cleanup
...
Pull poll annotations from Al Viro:
"This introduces a __bitwise type for POLL### bitmap, and propagates
the annotations through the tree. Most of that stuff is as simple as
'make ->poll() instances return __poll_t and do the same to local
variables used to hold the future return value'.
Some of the obvious brainos found in process are fixed (e.g. POLLIN
misspelled as POLL_IN). At that point the amount of sparse warnings is
low and most of them are for genuine bugs - e.g. ->poll() instance
deciding to return -EINVAL instead of a bitmap. I hadn't touched those
in this series - it's large enough as it is.
Another problem it has caught was eventpoll() ABI mess; select.c and
eventpoll.c assumed that corresponding POLL### and EPOLL### were
equal. That's true for some, but not all of them - EPOLL### are
arch-independent, but POLL### are not.
The last commit in this series separates userland POLL### values from
the (now arch-independent) kernel-side ones, converting between them
in the few places where they are copied to/from userland. AFAICS, this
is the least disruptive fix preserving poll(2) ABI and making epoll()
work on all architectures.
As it is, it's simply broken on sparc - try to give it EPOLLWRNORM and
it will trigger only on what would've triggered EPOLLWRBAND on other
architectures. EPOLLWRBAND and EPOLLRDHUP, OTOH, are never triggered
at all on sparc. With this patch they should work consistently on all
architectures"
* 'misc.poll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (37 commits)
make kernel-side POLL... arch-independent
eventpoll: no need to mask the result of epi_item_poll() again
eventpoll: constify struct epoll_event pointers
debugging printk in sg_poll() uses %x to print POLL... bitmap
annotate poll(2) guts
9p: untangle ->poll() mess
->si_band gets POLL... bitmap stored into a user-visible long field
ring_buffer_poll_wait() return value used as return value of ->poll()
the rest of drivers/*: annotate ->poll() instances
media: annotate ->poll() instances
fs: annotate ->poll() instances
ipc, kernel, mm: annotate ->poll() instances
net: annotate ->poll() instances
apparmor: annotate ->poll() instances
tomoyo: annotate ->poll() instances
sound: annotate ->poll() instances
acpi: annotate ->poll() instances
crypto: annotate ->poll() instances
block: annotate ->poll() instances
x86: annotate ->poll() instances
...
Do some cleanup of debug messages, making them cleaner and
easier to be used to analyze what's going on.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
When a packet discontinuity happens, it is not just the payload
that was lost. The headers are lost too. So, the max size is not
184 but, instead 188.
Also, while printing warnings, make a distinction between
MPEG-TS indicated discontinuity and detected one.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
There are a lot of places where sequences of space/tabs are
found. Get rid of all spaces before tabs.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
On several places, whitespaces are being used for indentation,
or even at the end of the line.
Fix them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Instead of using strncpy(), use strlcpy(), in order to
ensure that a \0 char will be added at the end of the
string.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The "reserved" field was a way, used at V4L2 API, to add new
data to existing structs without breaking userspace. However,
there are now clever ways of doing that, without needing to add
an uneeded overhead. So, get rid of them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This API is still experimental. Make it optional, allowing to
compile the code without it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
if the number of buffers requested by the user is too big, the
VB core will truncate to a valid value.
Use it, instead of what the user requested.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
It is not a good idea to let users to request a very high buffer
size.
So, add an upper limit.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Mauro Carvalho Chehab