media: pci: saa7164: replace BUG with error return

It was completely unnecessary to use BUG in saa7164_s_frequency,
just return an error instead. This also solves a smatch error:

drivers/media/pci/saa7164/saa7164-encoder.c:388 saa7164_s_frequency() error: potentially dereferencing uninitialized 'tsport'.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

media: v4l: ioctl: Set bus_info in v4l_querycap()

The bus_info field is set by most drivers based on the type of the device
bus as well as the name of the device. Do this in v4l_querycap() so
drivers don't need to. This keeps compatibility with non-default and silly
bus_info.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

media: media/saa7164: fix saa7164_encoder_register() memory leak bugs

Add a fix for the memory leak bugs that can occur when the
saa7164_encoder_register() function fails.
The function allocates memory without explicitly freeing
it when errors occur.
Add a better error handling that deallocate the unused buffers before the
function exits during a fail.

Signed-off-by: Daniel Niv <danielniv3@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: media/pci: rename VFL_TYPE_GRABBER to _VIDEO

'GRABBER' is a weird name, all other types map to the /dev
device names. Rename to 'VIDEO' to be consistent with the
other types.

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

media: media/pci: don't set description for ENUM_FMT

The V4L2 core sets the description for the driver in order to ensure
consistent naming.

So drop the strscpy of the description in drivers. Also remove any
description strings in driver-internal structures since those are
no longer needed.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

media: media/pci: set device_caps in struct video_device

Instead of filling in the struct v4l2_capability device_caps
field, fill in the struct video_device device_caps field.

That way the V4L2 core knows what the capabilities of the
video device are.

But this only really works if all drivers use this, so convert
all pci drivers in this patch.

Tested with cx88-blackbird and ivtv PVR-350.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157

Based on 3 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 of the license 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

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 of the license or at
your option any later version [author] [kishon] [vijay] [abraham]
[i] [kishon]@[ti] [com] 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

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 of the license or at
your option any later version [author] [graeme] [gregory]
[gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i]
[kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema]
[hk] [hemahk]@[ti] [com] 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-or-later

has been chosen to replace the boilerplate/reference in 1105 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

media: replace strcpy() by strscpy()

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>

media: use strscpy() instead of strlcpy()

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>

vfs: do bulk POLL* -> EPOLL* replacement

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>

media: annotate ->poll() instances

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

annotate poll_table_struct ->_key

Only POLL... bitmaps ever end up there and their only use is checking
for POLL... bits in them.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

[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] saa7164: 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>

[media] saa7164: Replace if and BUG with BUG_ON

Replace if condition and BUG() with a BUG_ON having the conditional
expression of the if statement as argument.

The Coccinelle semantic patch used to make this change is as follows:
@@ expression E,f; @@

(
if (<+... f(...) ...+>) { BUG(); }
|
- if (E) { BUG(); }
+ BUG_ON(E);
)

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

[media] saa7164: video and vbi ports share the same input/tuner/std

The vbi port should pass any tuner/input/standard information on
to the video port since in the input and tuner are shared between
the two.

There is no reason to duplicate this code, just pass the ioctls on
to the video encoder port.

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

[media] saa7164: fix input and tuner compliance problems

- the frequency range was never set
- there was no initial frequency
- missing index/tuner checks
- inconsistent standard reporting
- removed unnecessary tuner type checks (the core handles that)
- clamp frequency to the valid frequency range as per the V4L2 spec

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

[media] saa7164: fix format ioctls

Fix various v4l2-compliance issues in the formatting ioctls:

- the vbi device implemented video format ioctls which make no senses
for a vbi device, remove them.
- remove the unused ts_packet_size and ts_packet_count fields.
- fill in colorspace and field.
- fill in sizeimage with a default value.
- for the video node the get, set and try format functions all do the
same thing, so combine into a single function.

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

[media] saa7164: add support for control events

Now that saa7164 uses v4l2_fh and that poll() has been fixed, it is
trivial to add support for control events.

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

[media] saa7164: fix poll bugs

- poll doesn't return negative values, so you can't return -EINVAL.
Instead return POLLERR.
- poll can't be called if !video_is_registered(), so this test can
be dropped.
- poll can never do a blocking wait, so remove that check.
- poll shouldn't attempt to start streaming if the caller isn't interested
in read events.

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

[media] saa7164: add v4l2_fh support

Control events require the use of struct v4l2_fh. Add this to saa7164.

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

[media] saa7164: convert to the control framework

Convert this driver to the control framework. Note that the VBI device
nodes have no controls as there is nothing to control.

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

[media] saa7164: fix querycap warning

Fix the VIDIOC_QUERYCAP warning due to the missing device_caps. Don't fill
in the version field, the V4L2 core will do that for you.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: <stable@vger.kernel.org> # for v3.19 and up
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

[media] saa7164: Copyright update

Updates the copyright notes at the saa7164 driver.

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

[media] saa7164: add v4l2_device and replace parent with v4l2_dev

This driver did not yet support struct v4l2_device, so add it. This
make it possible to replace the deprecated parent field with the
v4l2_dev field, allowing the eventual removal of the parent field.

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

[media] saa7164: replace current_norm by g_std

current_norm is deprecated. Replace it by g_std.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: Steven Toth <stoth@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

[media] v4l2: remove g_chip_ident from bridge drivers where it is easy to do so

VIDIOC_DBG_G_CHIP_IDENT has been replaced by VIDIOC_DBG_G_CHIP_INFO. Remove
g_chip_ident support from bridge drivers since it is no longer needed.
This patch takes care of all the trivial cases.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Acked-by: Scott Jiang <scott.jiang.linux@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

[media] media: pci: remove duplicate checks for EPERM

This patch removes check for EPERM in dbg_g/s_register and
vidioc_g/s_register as this check is already performed by core.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

[media] v4l2: add const to argument of write-only s_register ioctl

This ioctl is defined as IOW, so pass the argument as const.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
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>

[media] v4l2: pass std by value to the write-only s_std ioctl

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>

[media] v4l2: add const to argument of write-only s_tuner ioctl

This ioctl is defined as IOW, so pass the argument as const.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Alexey Klimov <klimov.linux@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

[media] v4l2: add const to argument of write-only s_frequency ioctl

This ioctl is defined as IOW, so pass the argument as const.

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

[media] saa7164: silence GCC warnings

Compiling the saa7164 driver without CONFIG_VIDEO_ADV_DEBUG set triggers
these GCC warnings:
drivers/media/pci/saa7164/saa7164-encoder.c:1301:12: warning: ‘saa7164_g_register’ defined but not used [-Wunused-function]
drivers/media/pci/saa7164/saa7164-encoder.c:1314:12: warning: ‘saa7164_s_register’ defined but not used [-Wunused-function]
Silence these warnings by wrapping these two functions in an "#ifdef
CONFIG_VIDEO_ADV_DEBUG" and "#endif" pair.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

[media] saa7164: get rid of warning: no previous prototype

drivers/media/pci/saa7164/saa7164-api.c:1489:5: warning: no previous prototype for 'saa7164_api_modify_gpio' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-api.c:168:5: warning: no previous prototype for 'saa7164_api_set_gop_size' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-api.c:622:5: warning: no previous prototype for 'saa7164_api_set_dif' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-api.c:825:5: warning: no previous prototype for 'saa7164_api_configure_port_vbi' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-api.c:861:5: warning: no previous prototype for 'saa7164_api_configure_port_mpeg2ts' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-api.c:895:5: warning: no previous prototype for 'saa7164_api_configure_port_mpeg2ps' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-api.c:928:5: warning: no previous prototype for 'saa7164_api_dump_subdevs' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-bus.c:109:6: warning: no previous prototype for 'saa7164_bus_dumpmsg' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-bus.c:84:6: warning: no previous prototype for 'saa7164_bus_verify' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-cmd.c:135:5: warning: no previous prototype for 'saa7164_cmd_dequeue' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-cmd.c:189:5: warning: no previous prototype for 'saa7164_cmd_set' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-cmd.c:262:5: warning: no previous prototype for 'saa7164_cmd_wait' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-cmd.c:26:5: warning: no previous prototype for 'saa7164_cmd_alloc_seqno' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-cmd.c:45:6: warning: no previous prototype for 'saa7164_cmd_free_seqno' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-cmd.c:57:6: warning: no previous prototype for 'saa7164_cmd_timeout_seqno' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-cmd.c:67:5: warning: no previous prototype for 'saa7164_cmd_timeout_get' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-encoder.c:1104:29: warning: no previous prototype for 'saa7164_enc_next_buf' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-encoder.c:1290:5: warning: no previous prototype for 'saa7164_g_chip_ident' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-encoder.c:1300:5: warning: no previous prototype for 'saa7164_g_register' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-encoder.c:1313:5: warning: no previous prototype for 'saa7164_s_register' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-fw.c:40:5: warning: no previous prototype for 'saa7164_dl_wait_ack' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-fw.c:56:5: warning: no previous prototype for 'saa7164_dl_wait_clr' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-fw.c:74:5: warning: no previous prototype for 'saa7164_downloadimage' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-vbi.c:1050:29: warning: no previous prototype for 'saa7164_vbi_next_buf' [-Wmissing-prototypes]
drivers/media/pci/saa7164/saa7164-vbi.c:987:5: warning: no previous prototype for 'saa7164_vbi_fmt' [-Wmissing-prototypes]

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

[media] rename most media/video pci drivers to media/pci

Rename all PCI drivers with their own directory under
drivers/media/video into drivers/media/pci and update the
building system.

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