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path: root/drivers/media/video/em28xx
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2008-01-25V4L/DVB (6586): Remove some dead code and make drive fully V4L2 compatibleMauro Carvalho Chehab
There were some vestiges of an old V4L1 I2C driver that were called by em28xx. This patch removes this dead code, and replaces videodev.h to videodev2.h Now, this driver doesn't require V4L1 anymore. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6585): Convert em28xx to video_ioctl2Mauro Carvalho Chehab
Uses the newer ioctl handler at videodev. This patch also cleans up some bad logic at the driver and do CodingStyle and other cleanups at the resulting driver. Also, since VIDIOCMBUF were not working, the V4L1 compat code were removed. The compat code will eventually be re-inserted, if we find a clean way for implementing compatibility with the old API. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6584): Fix read() methodMauro Carvalho Chehab
Backport read() fixes from Markus Rechberger. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6583): Fix em28xx read stream lockingMauro Carvalho Chehab
On some situations, closing an streaming application and re-opening were returning -EBUSY. Uses the same locking schema also present on cx88. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6582): Fix em28xx to allow multiple openMauro Carvalho Chehab
Allows shared access support for em28xx. Just one userspace application is allowed to get stream. The other(s) application(s) can change V4L2 controls, set video standards, etc. This patch were splited from Markus Rechberger's tree and backported to 2.6.17 by Pádraig Brady. The original patch were ported to the latest em28xx version and had CodingStyle corrected to solve the issues pointed by scripts/checkpatch.pl. Thanks to Pádraig Brady <P@draigBrady.com> for pointing this. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6562): Make HVR900 to use also tveepromMauro Carvalho Chehab
Hauppauge firmwares can be decoded using tveeprom. This patch adds HVR-900 as a tveeprom client. It also adds xc3028 tuner entry to tveeprom. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6560): Fix a bug when setting tuner typeMauro Carvalho Chehab
Tuner-type were correctly filled only by the hint function. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB(6548b) Fix compilation for em28xxMauro Carvalho Chehab
From: Mauro Carvalho Chehab <mchehab@infradead.org> In file included from drivers/media/video/em28xx/em28xx-i2c.c:31: drivers/media/video/tuner-xc2028.h:10:26: error: dvb_frontend.h: No such file or directory In file included from drivers/media/video/em28xx/em28xx-i2c.c:31: drivers/media/video/tuner-xc2028.h:32: warning: 'struct dvb_frontend' declared inside parameter list drivers/media/video/tuner-xc2028.h:32: warning: its scope is only this definition or declaration, which is probably not what you want Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6546): Add comments for the hint methodsMauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6545): em28xx: autodetect Cinergy 200 USB and VGear PocketTVSascha Sommer
Adds autodetection support for the Cinergy200 USB and the VGear PocketTV. Whenever a usb device with generic empia em2800 usb ids is detected the device gets scanned for connected i2c devices. If the device list matches an em2800 device in the device list the model id gets changed accordingly. Signed-off-by: Sascha Sommer <saschasommer@freenet.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6539): em28xx: add support for vgear pockettvSascha Sommer
attached patch adds support for the vgear pockettv. It seems to require a write to another register for audio to work. I checked my old cinergydrv and we did the same register write there. I therefore enabled it for all em2800 based devices. Signed-off-by: Sascha Sommer <saschasommer@freenet.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6538): em28xx: fix locking to allow accesses from 2 different ↵Sascha Sommer
threads at the same time The attached patch modifies the em28xx driver so that there can be ioctls from multiple different threads. This is necessary for capture apps like MPlayer that use different threads for capturing and channel tuning. Now the locking is only done for the ioctls that change properties of the device or access the i2c bus. It also removes some locks that look unnecessary: In em28xx_init_dev: the videodevice is not registered yet so nothing can access the hardware meanwhile, the device struct is not assigned to the interface yet so no race with disconnect is possible In em28xx_release_resources: it gets only called when dev->lock is already held Signed-off-by: Sascha Sommer <saschasommer@freenet.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6537): Add entry for Pixelview Prolink PlayTV USB 2.0Mauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6536): Add a hint for boards without unique USB IDMauro Carvalho Chehab
This patch adds a function to allow trying to detect boards that shares the generic IDs. The current detection method is based at eeprom checksum. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6535): Fix: Adds the generic PCI IDs for em28xxMauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6519): Fix HVR900/HVR950 entryMauro Carvalho Chehab
- Television is now default; - Add HVR950 name at the entry. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6516): Allow faster loading by using 64 bytes block by em28xx i2c writeMauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6476): Add support for analog tv on HVR-950Mauro Carvalho Chehab
This patch adds USB ID for HVR-950. It also adds the callback for handling firmware loading. Thanks to Markus Reichberger for the reset commands. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6474): Add support for tuner-xc2028Mauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6422): Add the pending entries for xc2028/3028 based boardsMauro Carvalho Chehab
Also replaces all occurrences of TUNER_XCEIVE_XC3028 to TUNER_XC2028. Some work is still may be required to make sure that non-tm6000 drivers will be capable of using tuner-xc2028. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6384): Replace TDA9887_SET_CONFIG by TUNER_SET_CONFIGMauro Carvalho Chehab
Currently, the only tuner-specific device that allows special configurations is tda9887. However, tea5767 also may require some special configurations (for example, to specify a different Xtal freq). This patch replaces TDA9887_SET_CONFIG by a more generic internal ioctl (TUNER_SET_CONFIG). The newer one allows specifying what tuner is appliable to a configuration set, and allows an arbitrary configuration struct. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11V4L/DVB (6581): Fix: avoids negative vma usage countMauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11V4L/DVB (6540): em28xx: fix failing autodetection after the rebootSascha Sommer
The attached patch is required so that the autodetecion code also works after a reboot. Setting the I2C speed does not seem to be supported for em2800. Signed-off-by: Sascha Sommer <saschasommer@freenet.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-11-04V4L/DVB (6532): Add the remaining addresses for tda9887Mauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-11-04V4L/DVB (6531): Fix a regression caused by commit ↵Ludovico Cavedon
153962364dc6fa4a24571885fbe76506d8968610 From: Ludovico Cavedon <cavedon@sssup.it> Signed-off-by: Ludovico Cavedon <cavedon@sssup.it> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-11-04V4L/DVB (6514): em28xx: Include linux/mm.hTrent Piepho
This em28xx-video.c uses functions from this header, but doesn't include it. It depends on some v4l headers included two levels down including poll.h, which includes mm.h. These v4l headers might change, so it's best to include the headers needed directly. It also causes problems for the out of core build system's backward compatibility with older kernels, which is the real reason I bothered to create a patch for something that would otherwise be so minor that it would hardly be worth the trouble. Signed-off-by: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-11-04V4L/DVB (6479): use input functions, should depend on INPUTRandy Dunlap
All of these drivers select VIDEO_IR, which uses the input subsystem, so they should also depend on INPUT. Problem examples: drivers/built-in.o: In function `ir_input_key_event': ir-functions.c:(.text+0x10849a): undefined reference to `input_event' ir-functions.c:(.text+0x1084ac): undefined reference to `input_event' drivers/built-in.o: In function `saa7134_set_i2c_ir': (.text+0x11cc0a): undefined reference to `get_key_pinnacle_color' drivers/built-in.o: In function `saa7134_set_i2c_ir': (.text+0x11cc4f): undefined reference to `get_key_pinnacle_grey' drivers/built-in.o: In function `saa7134_input_fini': (.text+0x11cd8b): undefined reference to `input_unregister_device' drivers/built-in.o: In function `saa7134_input_init1': (.text+0x11d1fa): undefined reference to `input_allocate_device' drivers/built-in.o: In function `saa7134_input_init1': (.text+0x11d317): undefined reference to `input_register_device' drivers/built-in.o: In function `saa7134_input_init1': (.text+0x11d6ca): undefined reference to `input_free_device' drivers/built-in.o: In function `saa7134_set_i2c_ir': (.text+0x11c3f3): undefined reference to `ir_codes_hauppauge_new' drivers/built-in.o: In function `saa7134_set_i2c_ir': (.text+0x11c450): undefined reference to `ir_codes_pinnacle_color' drivers/built-in.o: In function `saa7134_set_i2c_ir': (.text+0x11c480): undefined reference to `ir_codes_purpletv' drivers/built-in.o: In function `saa7134_set_i2c_ir': (.text+0x11c495): undefined reference to `ir_codes_pinnacle_grey' drivers/built-in.o: In function `saa7134_ir_start': (.text+0x11c622): undefined reference to `ir_rc5_timer_end' drivers/built-in.o: In function `saa7134_ir_start': (.text+0x11c637): undefined reference to `ir_rc5_timer_keyup' drivers/built-in.o: In function `build_key': saa7134-input.c:(.text+0x11c769): undefined reference to `ir_extract_bits' saa7134-input.c:(.text+0x11c7ad): undefined reference to `ir_input_keydown' saa7134-input.c:(.text+0x11c7f0): undefined reference to `ir_input_keydown' saa7134-input.c:(.text+0x11c7f9): undefined reference to `ir_input_nokey' saa7134-input.c:(.text+0x11c806): undefined reference to `ir_input_nokey' drivers/built-in.o: In function `saa7134_input_init1': (.text+0x11ca07): undefined reference to `ir_codes_encore_enltv' drivers/built-in.o: In function `saa7134_input_init1': (.text+0x11caf6): undefined reference to `ir_input_init' drivers/built-in.o: In function `saa7134_input_init1': (.text+0x11cbf2): undefined reference to `ir_codes_avermedia' drivers/built-in.o: In function `saa7134_input_init1': (.text+0x11cc24): undefined reference to `ir_codes_pctv_sedna' drivers/built-in.o: In function `saa7134_input_init1': (.text+0x11cc53): undefined reference to `ir_codes_flydvb' drivers/built-in.o: In function `saa7134_input_init1': (.text+0x11cc85): undefined reference to `ir_codes_videomate_tv_pvr' drivers/built-in.o: In function `saa7134_input_init1': (.text+0x11ccb7): undefined reference to `ir_codes_pixelview' drivers/built-in.o: In function `saa7134_input_init1': (.text+0x11cce9): undefined reference to `ir_codes_eztv' drivers/built-in.o: In function `saa7134_input_init1': (.text+0x11cd1b): undefined reference to `ir_codes_manli' drivers/built-in.o: In function `saa7134_input_init1': (.text+0x11cda8): undefined reference to `ir_codes_cinergy' drivers/built-in.o: In function `saa7134_input_init1': (.text+0x11cdd7): undefined reference to `ir_codes_flyvideo' drivers/built-in.o: In function `saa7134_input_init1': (.text+0x11ce06): undefined reference to `ir_codes_asus_pc39' drivers/built-in.o: In function `saa7134_input_init1': (.text+0x11ce7d): undefined reference to `ir_codes_gotview7135' drivers/built-in.o: In function `saa7134_input_init1': (.text+0x11cee1): undefined reference to `ir_codes_proteus_2309' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-22V4L/DVB (6350): V4L: possible leak in em28xx_init_isocFlorin Malita
Coverity (CID 1929) spotted the following: if a transfer buffer allocation fails, the last allocated urb is leaked (it hasn't been stored in dev->urb[] yet so em28xx_uninit_isoc misses it). The patch also includes a small typo fix. Signed-off-by: Florin Malita <fmalita@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-22V4L/DVB (6320): v4l core: remove the unused .hardware V4L1 fieldMauro Carvalho Chehab
struct video_device used to define a .hardware field. While initialized on severl drivers, this field is never used inside V4L. However, drivers using it need to include the old V4L1 header. This seems to cause compilation troubles with some random configs. Better just to remove it from all drivers. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-19Fix misspellings of "system", "controller", "interrupt" and "necessary".Robert P. J. Day
Fix the various misspellings of "system", controller", "interrupt" and "[un]necessary". Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Adrian Bunk <bunk@kernel.org>
2007-10-13i2c: Remove NOP i2c_algorithm.algo_control() methodsDavid Brownell
This removes NOP implementations of i2c_algorithm.algo_control. With this change, there are no implementations of this hook in the kernel.org tree ... that hook seems about ripe to remove. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-10-10V4L/DVB (6316): Change list_for_each+list_entry to list_for_each_entryTrent Piepho
The rest of V4L files. There is one list_for_each+list_entry in cpia_pp.c that wasn't changed because it expects the loop iterator to remain NULL if the list is empty. A bug in vivi is fixed; the 'safe' version needs to be used because the loop deletes the list entries. Simplify a second loop in vivi and get rid if an un-used variable in that loop. Signed-off-by: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-09V4L/DVB (6079): Cleanup: remove linux/moduleparam.h from drivers/media filesMauro Carvalho Chehab
Since at least kernel 2.6.12-rc2, module.h includes moduleparm.h. This patch removes all occurences of moduleparm.h from drivers/media files. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-09V4L/DVB (6005): Initialize filp->private_data only once in em28xx_v4l2_openRolf Eike Beer
Some lines later filp->private_data is initialized to dev again. Since there are some checks that might fail in the mean time keep the later version. Signed-off-by: Rolf Eike Beer <eike-kernel@sf-tec.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-08-22USB: Fix a memory leak in em28xx_usb_probe()Jesper Juhl
If, in em28xx_usb_probe() the memory allocation dev->alt_max_pkt_size = kmalloc(32* dev->num_alt,GFP_KERNEL); fails, then we'll bail out and return -ENOMEM. The problem is that in that case we don't free the storage allocated to 'dev', thus causing a memory leak. This patch fixes the leak by freeing 'dev' before we return -ENOMEM. This fixes Coverity bug #647. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-22V4L/DVB (5640): Fix: em28xx shouldn't be selecting VIDEO_BUFMauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-05-15em28xx and ivtv should depend on PCIAl Viro
.. because video-buf.c requires PCI, and VIDEO_EM28XX selects it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-11Merge branch 'master' of ↵Linus Torvalds
ssh://master.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb * 'master' of ssh://master.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (44 commits) V4L/DVB (5571): V4l1-compat: Make VIDIOCSPICT return errors in a useful way V4L/DVB (5624): Radio-maestro.c cleanup V4L/DVB (5623): Dsbr100.c Replace usb_dsbr100_do_ioctl to use video_ioctl2 V4L/DVB (5622): Radio-zoltrix.c cleanup V4L/DVB (5621): Radio-cadet.c Replace cadet_do_ioctl to use video_ioctl2 V4L/DVB (5619): Dvb-usb: fix typo V4L/DVB (5618): Cx88: Drop the generic i2c client from cx88-vp3054-i2c V4L/DVB (5617): V4L2: videodev, allow debugging V4L/DVB (5614): M920x: Disable second adapter on LifeView TV Walker Twin V4L/DVB (5613): M920x: loosen up 80-col limit V4L/DVB (5612): M920x: rename function prefixes from m9206_foo to m920x_foo V4L/DVB (5611): M920x: replace deb_rc with deb V4L/DVB (5610): M920x: remove duplicated code V4L/DVB (5609): M920x: group like functions together V4L/DVB (5608): M920x: various whitespace cleanups V4L/DVB (5607): M920x: Initial support for devices likely manufactured by Dposh V4L/DVB (5606): M920x: add "c-basic-offset: 8" to help emacs to enforce tabbing V4L/DVB (5605): M920x: Add support for LifeView TV Walker Twin V4L/DVB (5603): V4L: Prevent queueing queued buffers. V4L/DVB (5602): Enable DiSEqC in Starbox II (vp7021a) ...
2007-05-09V4L/DVB (5586): Use menuconfig objects II - V4LJan Engelhardt
Change Kconfig objects from "menu, config" into "menuconfig" so that the user can disable the whole feature without having to enter the menu first. Signed-off-by: Jan Engelhardt <jengelh@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-05-09Fix occurrences of "the the "Michael Opdenacker
Signed-off-by: Michael Opdenacker <michael@free-electrons.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2007-05-09Fix misspellings collected by members of KJ list.Robert P. J. Day
Fix the misspellings of "propogate", "writting" and (oh, the shame :-) "kenrel" in the source tree. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2007-05-02PCI: Cleanup the includes of <linux/pci.h>Jean Delvare
I noticed that many source files include <linux/pci.h> while they do not appear to need it. Here is an attempt to clean it all up. In order to find all possibly affected files, I searched for all files including <linux/pci.h> but without any other occurence of "pci" or "PCI". I removed the include statement from all of these, then I compiled an allmodconfig kernel on both i386 and x86_64 and fixed the false positives manually. My tests covered 66% of the affected files, so there could be false positives remaining. Untested files are: arch/alpha/kernel/err_common.c arch/alpha/kernel/err_ev6.c arch/alpha/kernel/err_ev7.c arch/ia64/sn/kernel/huberror.c arch/ia64/sn/kernel/xpnet.c arch/m68knommu/kernel/dma.c arch/mips/lib/iomap.c arch/powerpc/platforms/pseries/ras.c arch/ppc/8260_io/enet.c arch/ppc/8260_io/fcc_enet.c arch/ppc/8xx_io/enet.c arch/ppc/syslib/ppc4xx_sgdma.c arch/sh64/mach-cayman/iomap.c arch/xtensa/kernel/xtensa_ksyms.c arch/xtensa/platform-iss/setup.c drivers/i2c/busses/i2c-at91.c drivers/i2c/busses/i2c-mpc.c drivers/media/video/saa711x.c drivers/misc/hdpuftrs/hdpu_cpustate.c drivers/misc/hdpuftrs/hdpu_nexus.c drivers/net/au1000_eth.c drivers/net/fec_8xx/fec_main.c drivers/net/fec_8xx/fec_mii.c drivers/net/fs_enet/fs_enet-main.c drivers/net/fs_enet/mac-fcc.c drivers/net/fs_enet/mac-fec.c drivers/net/fs_enet/mac-scc.c drivers/net/fs_enet/mii-bitbang.c drivers/net/fs_enet/mii-fec.c drivers/net/ibm_emac/ibm_emac_core.c drivers/net/lasi_82596.c drivers/parisc/hppb.c drivers/sbus/sbus.c drivers/video/g364fb.c drivers/video/platinumfb.c drivers/video/stifb.c drivers/video/valkyriefb.c include/asm-arm/arch-ixp4xx/dma.h sound/oss/au1550_ac97.c I would welcome test reports for these files. I am fine with removing the untested files from the patch if the general opinion is that these changes aren't safe. The tested part would still be nice to have. Note that this patch depends on another header fixup patch I submitted to LKML yesterday: [PATCH] scatterlist.h needs types.h http://lkml.org/lkml/2007/3/01/141 Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27V4L/DVB (5479): Use ARRAY_SIZE instead of a magic numberMauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-14[PATCH] remove many unneeded #includes of sched.hTim Schmielau
After Al Viro (finally) succeeded in removing the sched.h #include in module.h recently, it makes sense again to remove other superfluous sched.h includes. There are quite a lot of files which include it but don't actually need anything defined in there. Presumably these includes were once needed for macros that used to live in sched.h, but moved to other header files in the course of cleaning it up. To ease the pain, this time I did not fiddle with any header files and only removed #includes from .c-files, which tend to cause less trouble. Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha, arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig, allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all configs in arch/arm/configs on arm. I also checked that no new warnings were introduced by the patch (actually, some warnings are removed that were emitted by unnecessarily included header files). Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12[PATCH] mark struct file_operations const 4Arjan van de Ven
Many struct file_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. [akpm@sdl.org: dvb fix] Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2006-12-27V4L/DVB (5014): Allyesconfig build fixes on some non x86 archDavid Brownell
- CAFE_CCIC needs to depend on PCI, else "allyesconfig" breaks on systems without PCI - em28xx-video can't udelay(2500) else "allyesconfig" breaks on systems that refuse to spin that long (I saw it on ARM) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-10-10[PATCH] em28xx NULL noise removalAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-05IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-09-26V4L/DVB (4546): Add u32 argument to VIDIOC_INT_RESET.Hans Verkuil
The extra argument makes it possible to reset subsystems of a chip if that is supported. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-09-26V4L/DVB (4518): Allow manually selecting the proper helper driversMauro Carvalho Chehab
There are several boards on V4L that can work with several different helper modules for audio/video encoding/decoding and similar stuff. This patch adds the capability of choicing between autoselecting the pertinent helper modules for each driver, or to manually selecting them. Acked-by: Michael Krufky <mkrufky@linuxtv.org> Acked-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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