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path: root/drivers/media/usb/gspca/xirlink_cit.c
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* media: Use fallthrough pseudo-keywordGustavo A. R. Silva2020-08-291-2/+2
| | | | | | | | | | | | | Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
* media: xirlink_cit: add missing descriptor sanity checksJohan Hovold2020-03-121-1/+17
| | | | | | | | | | | | | | | | | | | | | Make sure to check that we have two alternate settings and at least one endpoint before accessing the second altsetting structure and dereferencing the endpoint arrays. This specifically avoids dereferencing NULL-pointers or corrupting memory when a device does not have the expected descriptors. Note that the sanity check in cit_get_packet_size() is not redundant as the driver is mixing looking up altsettings by index and by number, which may not coincide. Fixes: 659fefa0eb17 ("V4L/DVB: gspca_xirlink_cit: Add support for camera with a bcd version of 0.01") Fixes: 59f8b0bf3c12 ("V4L/DVB: gspca_xirlink_cit: support bandwidth changing for devices with 1 alt setting") Cc: stable <stable@vger.kernel.org> # 2.6.37 Cc: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Johan Hovold <johan@kernel.org> 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 157Thomas Gleixner2019-05-301-11/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: gspca: Convert PDEBUG to gspca_dbgJoe Perches2017-12-081-15/+17
| | | | | | | | | | | | | | | | | Use a more typical logging style. The current macro hides the gspca_dev argument so add it to the macro uses instead. Miscellanea: o Add missing '\n' terminations to formats o Realign arguments to open parenthesis o Remove commented out uses of PDEBUG Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: staging: fbtft: make const array gamma_par_mask staticColin Ian King2017-07-201-1/+1
| | | | | | | | | | | | | | | | Don't populate array gamma_par_mask on the stack but instead make it static. Makes the object code smaller by 148 bytes: Before: text data bss dec hex filename 2993 1104 0 4097 1001 drivers/staging/fbtft/fb_st7789v.o After: text data bss dec hex filename 2757 1192 0 3949 f6d drivers/staging/fbtft/fb_st7789v.o Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] media: Drop FSF's postal address from the source code filesSakari Ailus2017-01-271-4/+0
| | | | | | | | | | | | | | | | | | | | | 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] xirlink_cit: comment unreachable codeMauro Carvalho Chehab2015-05-011-3/+9
| | | | | | | | drivers/media/usb/gspca/xirlink_cit.c:1776 cit_start_model2() info: ignoring unreachable code. drivers/media/usb/gspca/xirlink_cit.c:1858 cit_start_model2() info: ignoring unreachable code. drivers/media/usb/gspca/xirlink_cit.c:1910 cit_start_model2() info: ignoring unreachable code. Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
* [media] gspca: print small buffers via %*phAndy Shevchenko2013-09-261-8/+4
| | | | | | | | | Instead of passing each byte through stack let's use %*ph specifier to do this job better. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
* [media] gspca: store current mode instead of individual parametersOndrej Zary2013-09-261-17/+17
| | | | | | | | | | Store complete current mode (struct v4l2_pix_format) in struct gspca_dev instead of separate pixfmt, width and height parameters. This is a preparation for variable resolution support. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
* [media] usb/gspca/xirlink_cit.c: use IS_ENABLED() macroPeter Senna Tschudin2013-02-051-4/+4
| | | | | | | | | | | | | | replace: #if defined(CONFIG_INPUT) || \ defined(CONFIG_INPUT_MODULE) with: #if IS_ENABLED(CONFIG_INPUT) This change was made for: CONFIG_INPUT Reported-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] gspca: Don't set gspca_dev->dev to NULL before stop0Hans de Goede2012-09-131-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | In commit a3d6e8cc0e6ddc8b3cfdeb3c979f07ed1aa528b3 gspca_dev->dev is set to NULL on disconnect, before calling stop0. The plan was to get rid of gspca_dev->present and instead simply check for gspca_dev->dev everywhere where we were checking for present. This should be race free since all users of gspca_dev->dev hold the usb_lock, or so I thought. But I was wrong, drivers which use a work-queue + synchronous bulk transfers to get the video data don't hold the usb_lock while doing so, their stop0 callbacks stop the workqueue, so they won't be using gspca_dev->dev anymore after the stop0 call, but they might be dereferincing it before, so we should not set gspca_dev->dev to NULL on disconnect before calling stop0. This also means that the workqueue functions in these drivers cannot use gspca_dev->dev to check if they need to stop because of disconnection, so we will need to keep gspca_dev->present around, and set that to 0 on disconnect, before calling stop0. Unfortunately as part of the plan to remove gspca_dev->present, these workqueues where already moved over to checking for gspca_dev->dev instead of gspca_dev->present as part of commit 254902b01d2acc6aced99ec17caa4c6cd890cdea, so this patch also reverts those parts of that commit. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] rename most media/video usb drivers to media/usbMauro Carvalho Chehab2012-08-151-0/+3145
Rename all USB drivers with their own directory under drivers/media/video into drivers/media/usb and update the building system. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>