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2016-07-17drivers: misc: ti-st: Use int instead of fuzzy char for callback statusGeert Uytterhoeven1-1/+1
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>
2016-02-01[media] wl128x: fix typo in MODULE_PARM_DESCDan Carpenter1-1/+1
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>
2015-07-06[media] wl128x: use swap() in fm_rdsparse_swapbytes()Fabian Frederick1-4/+1
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>
2015-05-30[media] wl128x: Allow compile test of GPIO consumers if !GPIOLIBGeert Uytterhoeven1-2/+2
The GPIO subsystem provides dummy GPIO consumer functions if GPIOLIB is not enabled. Hence drivers that depend on GPIOLIB, but use GPIO consumer functionality only, can still be compiled if GPIOLIB is not enabled. Relax the dependency on GPIOLIB if COMPILE_TEST is enabled, where appropriate. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-04-30[media] wl128x: fix int type for streg_cbdataMauro Carvalho Chehab1-1/+1
The streg_cbdata can have a negative error value. So, it should be an integer, and not u8, as reported by smatch: drivers/media/radio/wl128x/fmdrv_common.c:1517 fmc_prepare() warn: assigning (-115) to unsigned variable 'fmdev->streg_cbdata' Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-04-02[media] wl128x: embed video_deviceHans Verkuil1-18/+10
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>
2015-04-02[media] wl128x-radio really depends on TI_STArnd Bergmann1-1/+1
All other drivers using the TI_ST infrastructure use 'depends on' for this symbol, and it makes no sense to only enable that if CONFIG_NET is enable, because the radio driver also depends on CONFIG_NET itself: ERROR: "skb_queue_purge" [drivers/media/radio/wl128x/fm_drv.ko] undefined! ERROR: "skb_push" [drivers/media/radio/wl128x/fm_drv.ko] undefined! ERROR: "skb_pull" [drivers/media/radio/wl128x/fm_drv.ko] undefined! Making the driver dependency explicit solves randconfig build problems and makes it more obvious to the reader. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-01-27[media] media: radio: wl128x: fmdrv_rx.c: Remove unused functionRickard Strandqvist2-17/+0
Remove the function fm_rx_get_rds_system() that is not used anywhere. This was partially found by using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2014-12-02[media] media/radio: fix querycapHans Verkuil1-1/+3
Querycap should set the device_caps field. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2014-10-24[media] wl128x: fix fmdbg compiler warningHans Verkuil1-1/+1
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>
2014-09-03[media] wl128x: fix sparse warningsHans Verkuil3-11/+12
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>
2013-10-15[media] fmdrv_common: fix sparse warningHans Verkuil1-1/+1
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>
2013-06-28[media] wl128x: add missing struct v4l2_deviceHans Verkuil2-0/+10
This struct is now required for all video device nodes, but it was missing in this driver. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-05-21[media] wl128x: do not call copy_to_user() while holding spinlocksAlexey Khoroshilov1-10/+14
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>
2013-03-24[media] v4l2: add const to argument of write-only s_tuner ioctlHans Verkuil1-1/+1
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>
2013-03-24[media] v4l2: add const to argument of write-only s_frequency ioctlHans Verkuil1-4/+2
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>
2013-02-24Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediaLinus Torvalds1-2/+1
Pull media updates from Mauro Carvalho Chehab: - Some cleanups at V4L2 documentation - new drivers: ts2020 frontend, ov9650 sensor, s5c73m3 sensor, sh-mobile veu mem2mem driver, radio-ma901, davinci_vpfe staging driver - Lots of missing MAINTAINERS entries added - several em28xx driver improvements, including its conversion to videobuf2 - several fixups on drivers to make them to better comply with the API - DVB core: add support for DVBv5 stats, allowing the implementation of statistics for new standards like ISDB - mb86a20s: add statistics to the driver - lots of new board additions, cleanups, and driver improvements. * 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (596 commits) [media] media: Add 0x3009 USB PID to ttusb2 driver (fixed diff) [media] rtl28xxu: Add USB IDs for Compro VideoMate U620F [media] em28xx: add usb id for terratec h5 rev. 3 [media] media: rc: gpio-ir-recv: add support for device tree parsing [media] mceusb: move check earlier to make smatch happy [media] radio-si470x doc: add info about v4l2-ctl and sox+alsa [media] staging: media: Remove unnecessary OOM messages [media] sh_vou: Use vou_dev instead of vou_file wherever possible [media] sh_vou: Use video_drvdata() [media] drivers/media/platform/soc_camera/pxa_camera.c: use devm_ functions [media] mt9t112: mt9t111 format set up differs from mt9t112 [media] sh-mobile-ceu-camera: fix SHARPNESS control default Revert "[media] fc0011: Return early, if the frequency is already tuned" [media] cx18/ivtv: fix regression: remove __init from a non-init function [media] em28xx: fix analog streaming with USB bulk transfers [media] stv0900: remove unnecessary null pointer check [media] fc0011: Return early, if the frequency is already tuned [media] fc0011: Add some sanity checks and cleanups [media] fc0011: Fix xin value clamping Revert "[media] [PATH,1/2] mxl5007 move reset to attach" ...
2013-02-21Merge tag 'tty-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/ttyLinus Torvalds1-1/+1
Pull tty/serial patches from Greg Kroah-Hartman: "Here's the big tty/serial driver patches for 3.9-rc1. More tty port rework and fixes from Jiri here, as well as lots of individual serial driver updates and fixes. All of these have been in the linux-next tree for a while." * tag 'tty-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (140 commits) tty: mxser: improve error handling in mxser_probe() and mxser_module_init() serial: imx: fix uninitialized variable warning serial: tegra: assume CONFIG_OF TTY: do not update atime/mtime on read/write lguest: select CONFIG_TTY to build properly. ARM defconfigs: add missing inclusions of linux/platform_device.h fb/exynos: include platform_device.h ARM: sa1100/assabet: include platform_device.h directly serial: imx: Fix recursive locking bug pps: Fix build breakage from decoupling pps from tty tty: Remove ancient hardpps() pps: Additional cleanups in uart_handle_dcd_change pps: Move timestamp read into PPS code proper pps: Don't crash the machine when exiting will do pps: Fix a use-after free bug when unregistering a source. pps: Use pps_lookup_dev to reduce ldisc coupling pps: Add pps_lookup_dev() function tty: serial: uartlite: Support uartlite on big and little endian systems tty: serial: uartlite: Fix sparse and checkpatch warnings serial/arc-uart: Miscll DT related updates (Grant's review comments) ... Fix up trivial conflicts, mostly just due to the TTY config option clashing with the EXPERIMENTAL removal.
2013-01-24[media] radio: set vfl_dir correctly to fix modulator regressionHans Verkuil1-0/+10
The vfl_dir field should be set to indicate whether a device can receive data, output data or can do both. This is used to let the v4l core know which ioctls should be accepted and which can be refused. Unfortunately, when this field was added the radio modulator drivers were not updated: radio modulators transmit and so vfl_dir should be set to VFL_DIR_TX (or VFL_DIR_M2M in the special case of wl128x). Because of this omission it is not possible to call g/s_modulator for these drivers, which effectively renders them useless. This patch sets the correct vfl_dir value for these drivers, correcting this bug. Thanks to Paul Grinberg for bringing this to my attention. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-18tty: Added a CONFIG_TTY option to allow removal of TTYJoe Millenbach1-1/+1
The option allows you to remove TTY and compile without errors. This saves space on systems that won't support TTY interfaces anyway. bloat-o-meter output is below. The bulk of this patch consists of Kconfig changes adding "depends on TTY" to various serial devices and similar drivers that require the TTY layer. Ideally, these dependencies would occur on a common intermediate symbol such as SERIO, but most drivers "select SERIO" rather than "depends on SERIO", and "select" does not respect dependencies. bloat-o-meter output comparing our previous minimal to new minimal by removing TTY. The list is filtered to not show removed entries with awk '$3 != "-"' as the list was very long. add/remove: 0/226 grow/shrink: 2/14 up/down: 6/-35356 (-35350) function old new delta chr_dev_init 166 170 +4 allow_signal 80 82 +2 static.__warned 143 142 -1 disallow_signal 63 62 -1 __set_special_pids 95 94 -1 unregister_console 126 121 -5 start_kernel 546 541 -5 register_console 593 588 -5 copy_from_user 45 40 -5 sys_setsid 128 120 -8 sys_vhangup 32 19 -13 do_exit 1543 1526 -17 bitmap_zero 60 40 -20 arch_local_irq_save 137 117 -20 release_task 674 652 -22 static.spin_unlock_irqrestore 308 260 -48 Signed-off-by: Joe Millenbach <jmillenbach@gmail.com> Reviewed-by: Jamey Sharp <jamey@minilop.net> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-12-27[media] wl128x: Replace memcpy with struct assignmentEzequiel Garcia1-2/+1
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>
2012-10-28[media] fmdrv: Don't check if unsigned are below zeroMauro Carvalho Chehab2-2/+2
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>
2012-10-28[media] fmdrv: better define fmdbg() macro to avoid warningsMauro Carvalho Chehab1-1/+1
drivers/media/radio/wl128x/fmdrv_common.c:1619:47: warning: suggest braces around empty body in an 'else' statement [-Wempty-body] Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-09-26[media] radio drivers: in non-blocking mode return EAGAIN in hwseekHans Verkuil1-0/+3
VIDIOC_S_HW_FREQ_SEEK should return EAGAIN when called in non-blocking mode. This might change in the future if we add support for this in the future, but right now this is not supported. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-09-26[media] v4l2: make vidioc_s_modulator constHans Verkuil1-1/+1
Write-only ioctls should have a const argument in the ioctl op. Do this conversion for vidioc_s_modulator. 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>
2012-09-26[media] v4l2: make vidioc_s_audio constHans Verkuil1-1/+1
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>
2012-09-26[media] v4l2: make vidioc_s_freq_hw_seek constHans Verkuil1-1/+1
Write-only ioctls should have a const argument in the ioctl op. Do this conversion for vidioc_s_freq_hw_seek. 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>
2012-08-09[media] wl128x: remove V4L2_FL_LOCK_ALL_FOPSHans Verkuil1-12/+26
Add proper locking to the file operations, allowing for the removal of the V4L2_FL_LOCK_ALL_FOPS flag. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-18[media] S_HW_FREQ_SEEK: set capability flags and return ENODATA instead of EAGAINHans Verkuil2-2/+4
Set the new capability flags in G_TUNER and return ENODATA if no channels were found. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-14[media] v4l2-dev: add flag to have the core lock all file operationsHans Verkuil1-0/+4
This used to be the default if the lock pointer was set, but now that lock is by default only used for ioctl serialization. Those drivers that already used core locking have this flag set explicitly, except for some drivers where it was obvious that there was no need to serialize any file operations other than ioctl. The drivers that didn't need this flag were: drivers/media/radio/dsbr100.c drivers/media/radio/radio-isa.c drivers/media/radio/radio-keene.c drivers/media/radio/radio-miropcm20.c drivers/media/radio/radio-mr800.c drivers/media/radio/radio-tea5764.c drivers/media/radio/radio-timb.c drivers/media/video/vivi.c sound/i2c/other/tea575x-tuner.c The other drivers that use core locking and where it was not immediately obvious that this flag wasn't needed were changed so that the flag is set together with a comment that that driver needs work to avoid having to set that flag. This will often involve taking the core lock in the fops themselves. Eventually this flag should go and it should not be used in new drivers. There are a few reasons why we want to avoid core locking of non-ioctl fops: in the case of mmap this can lead to a deadlock in rare situations since when mmap is called the mmap_sem is held and it is possible for other parts of the code to take that lock as well (copy_from_user()/copy_to_user() perform a down_read(&mm->mmap_sem) when a page fault occurs). It is very unlikely that that happens since the core lock serializes all fops, but the kernel warns about it if lock validation is turned on. For poll it is also undesirable to take the core lock as that can introduce increased latency. The same is true for read/write. While it was possible to make flags or something to turn on/off taking the core lock for each file operation, in practice it is much simpler to just not take it at all except for ioctl and leave it to the driver to take the lock. There are only a handful fops compared to the zillion ioctls we have. I also wanted to make it obvious which drivers still take the lock for all fops, so that's why I chose to have drivers set it explicitly. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-02-15[media] wl128x: fix build errors when GPIOLIB is not enabledRandy Dunlap1-2/+2
From: Randy Dunlap <rdunlap@xenotime.net> Fix wl128x Kconfig to depend on GPIOLIB since TI_ST also depends on GPIOLIB. (.text+0xe6d60): undefined reference to `st_register' (.text+0xe7016): undefined reference to `st_unregister' (.text+0xe70ce): undefined reference to `st_unregister' Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Acked-by: Manjunatha Halli <manjunatha_halli@ti.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-06[media] drivers: media: radio: Fix dependencies for RADIO_WL128XFabio Estevam1-1/+1
Fix the following build warning: warning: (RADIO_WL128X) selects TI_ST which has unmet direct dependencies (MISC_DEVICES && NET && GPIOLIB) Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-12-30[media] wl128x: fmdrv_tx: fix signedness bugsXi Wang2-40/+41
Message-Id: <1322820073-19347-4-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>
2011-12-30[media] wl128x: fmdrv_rx: fix signedness bugsXi Wang2-66/+68
Message-Id: <1322820073-19347-3-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>
2011-12-30[media] wl128x: fmdrv_common: fix signedness bugsXi Wang2-44/+42
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>
2011-11-25[media] radio: NUL terminate a user stringDan Carpenter1-0/+1
We pass this to fm_tx_set_radio_text() which expects a NUL terminated string. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-06Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linuxLinus Torvalds1-0/+2
* 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: (230 commits) Revert "tracing: Include module.h in define_trace.h" irq: don't put module.h into irq.h for tracking irqgen modules. bluetooth: macroize two small inlines to avoid module.h ip_vs.h: fix implicit use of module_get/module_put from module.h nf_conntrack.h: fix up fallout from implicit moduleparam.h presence include: replace linux/module.h with "struct module" wherever possible include: convert various register fcns to macros to avoid include chaining crypto.h: remove unused crypto_tfm_alg_modname() inline uwb.h: fix implicit use of asm/page.h for PAGE_SIZE pm_runtime.h: explicitly requires notifier.h linux/dmaengine.h: fix implicit use of bitmap.h and asm/page.h miscdevice.h: fix up implicit use of lists and types stop_machine.h: fix implicit use of smp.h for smp_processor_id of: fix implicit use of errno.h in include/linux/of.h of_platform.h: delete needless include <linux/module.h> acpi: remove module.h include from platform/aclinux.h miscdevice.h: delete unnecessary inclusion of module.h device_cgroup.h: delete needless include <linux/module.h> net: sch_generic remove redundant use of <linux/module.h> net: inet_timewait_sock doesnt need <linux/module.h> ... Fix up trivial conflicts (other header files, and removal of the ab3550 mfd driver) in - drivers/media/dvb/frontends/dibx000_common.c - drivers/media/video/{mt9m111.c,ov6650.c} - drivers/mfd/ab3550-core.c - include/linux/dmaengine.h
2011-10-31drivers/media: Add export.h for EXPORT_SYMBOL/THIS_MODULE as requiredPaul Gortmaker1-0/+2
These two macros were in module.h but now module.h is no longer sprayed across every source file imaginable, so the users need to expicitly call out their use of them. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-31Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediaLinus Torvalds1-2/+4
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (348 commits) [media] pctv452e: Remove bogus code [media] adv7175: Make use of media bus pixel codes [media] media: vb2: fix incorrect return value [media] em28xx: implement VIDIOC_ENUM_FRAMESIZES [media] cx23885: Stop the risc video fifo before reconfiguring it [media] cx23885: Avoid incorrect error handling and reporting [media] cx23885: Avoid stopping the risc engine during buffer timeout [media] cx23885: Removed a spurious function cx23885_set_scale() [media] cx23885: v4l2 api compliance, set the audioset field correctly [media] cx23885: hook the audio selection functions into the main driver [media] cx23885: add generic functions for dealing with audio input selection [media] cx23885: fixes related to maximum number of inputs and range checking [media] cx23885: Initial support for the MPX-885 mini-card [media] cx25840: Ensure AUDIO6 and AUDIO7 trigger line-in baseband use [media] cx23885: Enable audio line in support from the back panel [media] cx23885: Allow the audio mux config to be specified on a per input basis [media] cx25840: Enable support for non-tuner LR1/LR2 audio inputs [media] cx23885: Name an internal i2c part and declare a bitfield by name [media] cx23885: Ensure VBI buffers timeout quickly - bugfix for vbi hangs during streaming [media] cx23885: remove channel dump diagnostics when a vbi buffer times out ... Fix up trivial conflicts in drivers/misc/altera-stapl/altera.c (header file rename vs add)
2011-09-21[media] v4l2-ctrls: replace is_volatile with V4L2_CTRL_FLAG_VOLATILEHans Verkuil1-1/+1
With the new flag there is no need anymore to have a separate is_volatile field. Modify all users to use the new flag. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-09-15Merge branch 'master' into for-nextJiri Kosina2-6/+2
Fast-forward merge with Linus to be able to merge patches based on more recent version of the tree.
2011-09-15treewide: remove extra semicolons from various parts of the kernelJustin P. Mattock1-1/+1
This is a resend from the original, changing the title from PATCH to RFC(since this is a review for commit, and I should have put that the first go around). and also removing some of the commit's with ia64 and bash since it is significant. let me know if I might have missed anything etc.. Signed-off-by: Justin P. Mattock <justinmattock@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-09-06[media] wl128x: fix compiler warning + wrong write() returnHans Verkuil1-1/+3
The fix is to check for ret and return -EFAULT if non-zero. I also noticed that write() didn't return the number of bytes written. Fixed as well. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] v4l2-ctrls: fix and improve volatile control handlingHans Verkuil1-1/+1
If you have a cluster of controls that is a mix of volatile and non-volatile controls, then requesting the value of the volatile control would fail if the master control of that cluster was non-volatile. The code assumed that the volatile state of the master control was the same for all other controls in the cluster. This is now fixed. In addition, it was clear from bugs in some drivers that it was confusing that the ctrl->cur union had to be used in g_volatile_ctrl. Several drivers used the 'new' values instead. The framework was changed so that drivers now set the new value instead of the current value. This has an additional benefit as well: the volatile values are now only stored in the 'new' value, leaving the current value alone. This is useful for autofoo/foo control clusters where you want to have a 'foo' control act like a volatile control if 'autofoo' is on, but as a normal control when it is off. Since with this change the cur value is no longer overwritten when g_volatile_ctrl is called, you can use it to remember the original 'foo' value. For example: autofoo = 0, foo = 10 and foo is non-volatile. Now autofoo is set to 1 and foo is marked volatile. Retrieving the foo value will get the volatile value. Set autofoo back to 0, which marks foo as non- volatile again, and retrieving foo will get the old current value of 10. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] radio: Use the subsystem version control for VIDIOC_QUERYCAPMauro Carvalho Chehab2-5/+1
Just like the video drivers, the right thing to do is to use the per-subsystem version control. Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-05-25[media] wl12xx: g_volatile_ctrl fix: wrong field setHans Verkuil1-1/+1
The function g_volatile_ctrl should change the current value rather than the new value. These two drivers didn't do that, so the value is never reported correctly. In the future this will change since this behavior is clearly unexpected, but for now fix these drivers first. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-05-20[media] wl128x: Remove unused NO_OF_ENTRIES_IN_ARRAY macroThiago Farina1-2/+0
Signed-off-by: Thiago Farina <tfransosi@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-04-07Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6Linus Torvalds2-4/+4
* 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6: Fix common misspellings
2011-03-31[media] radio: wl128x: Update registration process with STManjunatha Halli1-3/+13
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>
2011-03-31Fix common misspellingsLucas De Marchi2-4/+4
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>