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* Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bklLinus Torvalds2010-10-2214-4/+23
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl: vfs: make no_llseek the default vfs: don't use BKL in default_llseek llseek: automatically add .llseek fop libfs: use generic_file_llseek for simple_attr mac80211: disallow seeks in minstrel debug code lirc: make chardev nonseekable viotape: use noop_llseek raw: use explicit llseek file operations ibmasmfs: use generic_file_llseek spufs: use llseek in all file operations arm/omap: use generic_file_llseek in iommu_debug lkdtm: use generic_file_llseek in debugfs net/wireless: use generic_file_llseek in debugfs drm: use noop_llseek
| * llseek: automatically add .llseek fopArnd Bergmann2010-10-1513-4/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All file_operations should get a .llseek operation so we can make nonseekable_open the default for future file operations without a .llseek pointer. The three cases that we can automatically detect are no_llseek, seq_lseek and default_llseek. For cases where we can we can automatically prove that the file offset is always ignored, we use noop_llseek, which maintains the current behavior of not returning an error from a seek. New drivers should normally not use noop_llseek but instead use no_llseek and call nonseekable_open at open time. Existing drivers can be converted to do the same when the maintainer knows for certain that no user code relies on calling seek on the device file. The generated code is often incorrectly indented and right now contains comments that clarify for each added line why a specific variant was chosen. In the version that gets submitted upstream, the comments will be gone and I will manually fix the indentation, because there does not seem to be a way to do that using coccinelle. Some amount of new code is currently sitting in linux-next that should get the same modifications, which I will do at the end of the merge window. Many thanks to Julia Lawall for helping me learn to write a semantic patch that does all this. ===== begin semantic patch ===== // This adds an llseek= method to all file operations, // as a preparation for making no_llseek the default. // // The rules are // - use no_llseek explicitly if we do nonseekable_open // - use seq_lseek for sequential files // - use default_llseek if we know we access f_pos // - use noop_llseek if we know we don't access f_pos, // but we still want to allow users to call lseek // @ open1 exists @ identifier nested_open; @@ nested_open(...) { <+... nonseekable_open(...) ...+> } @ open exists@ identifier open_f; identifier i, f; identifier open1.nested_open; @@ int open_f(struct inode *i, struct file *f) { <+... ( nonseekable_open(...) | nested_open(...) ) ...+> } @ read disable optional_qualifier exists @ identifier read_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; expression E; identifier func; @@ ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off) { <+... ( *off = E | *off += E | func(..., off, ...) | E = *off ) ...+> } @ read_no_fpos disable optional_qualifier exists @ identifier read_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; @@ ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off) { ... when != off } @ write @ identifier write_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; expression E; identifier func; @@ ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off) { <+... ( *off = E | *off += E | func(..., off, ...) | E = *off ) ...+> } @ write_no_fpos @ identifier write_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; @@ ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off) { ... when != off } @ fops0 @ identifier fops; @@ struct file_operations fops = { ... }; @ has_llseek depends on fops0 @ identifier fops0.fops; identifier llseek_f; @@ struct file_operations fops = { ... .llseek = llseek_f, ... }; @ has_read depends on fops0 @ identifier fops0.fops; identifier read_f; @@ struct file_operations fops = { ... .read = read_f, ... }; @ has_write depends on fops0 @ identifier fops0.fops; identifier write_f; @@ struct file_operations fops = { ... .write = write_f, ... }; @ has_open depends on fops0 @ identifier fops0.fops; identifier open_f; @@ struct file_operations fops = { ... .open = open_f, ... }; // use no_llseek if we call nonseekable_open //////////////////////////////////////////// @ nonseekable1 depends on !has_llseek && has_open @ identifier fops0.fops; identifier nso ~= "nonseekable_open"; @@ struct file_operations fops = { ... .open = nso, ... +.llseek = no_llseek, /* nonseekable */ }; @ nonseekable2 depends on !has_llseek @ identifier fops0.fops; identifier open.open_f; @@ struct file_operations fops = { ... .open = open_f, ... +.llseek = no_llseek, /* open uses nonseekable */ }; // use seq_lseek for sequential files ///////////////////////////////////// @ seq depends on !has_llseek @ identifier fops0.fops; identifier sr ~= "seq_read"; @@ struct file_operations fops = { ... .read = sr, ... +.llseek = seq_lseek, /* we have seq_read */ }; // use default_llseek if there is a readdir /////////////////////////////////////////// @ fops1 depends on !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier readdir_e; @@ // any other fop is used that changes pos struct file_operations fops = { ... .readdir = readdir_e, ... +.llseek = default_llseek, /* readdir is present */ }; // use default_llseek if at least one of read/write touches f_pos ///////////////////////////////////////////////////////////////// @ fops2 depends on !fops1 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read.read_f; @@ // read fops use offset struct file_operations fops = { ... .read = read_f, ... +.llseek = default_llseek, /* read accesses f_pos */ }; @ fops3 depends on !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier write.write_f; @@ // write fops use offset struct file_operations fops = { ... .write = write_f, ... + .llseek = default_llseek, /* write accesses f_pos */ }; // Use noop_llseek if neither read nor write accesses f_pos /////////////////////////////////////////////////////////// @ fops4 depends on !fops1 && !fops2 && !fops3 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read_no_fpos.read_f; identifier write_no_fpos.write_f; @@ // write fops use offset struct file_operations fops = { ... .write = write_f, .read = read_f, ... +.llseek = noop_llseek, /* read and write both use no f_pos */ }; @ depends on has_write && !has_read && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier write_no_fpos.write_f; @@ struct file_operations fops = { ... .write = write_f, ... +.llseek = noop_llseek, /* write uses no f_pos */ }; @ depends on has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read_no_fpos.read_f; @@ struct file_operations fops = { ... .read = read_f, ... +.llseek = noop_llseek, /* read uses no f_pos */ }; @ depends on !has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; @@ struct file_operations fops = { ... +.llseek = noop_llseek, /* no read or write fn */ }; ===== End semantic patch ===== Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Julia Lawall <julia@diku.dk> Cc: Christoph Hellwig <hch@infradead.org>
| * lirc: make chardev nonseekableArnd Bergmann2010-09-162-0/+3
| | | | | | | | | | | | | | | | | | There does not seem to be a need for lirc to allow seeking on the file descriptor, so let's just disallow this before users start relying on it. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* | Merge branch 'config' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bklLinus Torvalds2010-10-227-58/+19
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'config' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl: BKL: introduce CONFIG_BKL. dabusb: remove the BKL sunrpc: remove the big kernel lock init/main.c: remove BKL notations blktrace: remove the big kernel lock rtmutex-tester: make it build without BKL dvb-core: kill the big kernel lock dvb/bt8xx: kill the big kernel lock tlclk: remove big kernel lock fix rawctl compat ioctls breakage on amd64 and itanic uml: kill big kernel lock parisc: remove big kernel lock cris: autoconvert trivial BKL users alpha: kill big kernel lock isapnp: BKL removal s390/block: kill the big kernel lock hpet: kill BKL, add compat_ioctl
| * | BKL: introduce CONFIG_BKL.Arnd Bergmann2010-10-211-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With all the patches we have queued in the BKL removal tree, only a few dozen modules are left that actually rely on the BKL, and even there are lots of low-hanging fruit. We need to decide what to do about them, this patch illustrates one of the options: Every user of the BKL is marked as 'depends on BKL' in Kconfig, and the CONFIG_BKL becomes a user-visible option. If it gets disabled, no BKL using module can be built any more and the BKL code itself is compiled out. The one exception is file locking, which is practically always enabled and does a 'select BKL' instead. This effectively forces CONFIG_BKL to be enabled until we have solved the fs/lockd mess and can apply the patch that removes the BKL from fs/locks.c. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
| * | dabusb: remove the BKLArnd Bergmann2010-10-191-15/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | The dabusb device driver is sufficiently serialized using its own mutex, no need for the big kernel lock here in addition. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | dvb-core: kill the big kernel lockArnd Bergmann2010-10-194-40/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The dvb core only uses the big kernel lock in the open and ioctl functions, which means it can be replaced with a dvb specific mutex. Fortunately, all the ioctl functions go through dvb_usercopy, so we can move the serialization in there. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: linux-media@vger.kernel.org
| * | dvb/bt8xx: kill the big kernel lockArnd Bergmann2010-10-191-3/+4
| |/ | | | | | | | | | | | | | | | | | | The bt8xx driver only uses the big kernel lock in its dst_ca_ioctl function and never to serialize against other code, so we can trivially replace it with a private mutex. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: linux-media@vger.kernel.org Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
* | v4l1: fix 32-bit compat microcode loading translationLinus Torvalds2010-10-151-11/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The compat code for the VIDIOCSMICROCODE ioctl is totally buggered. It's only used by the VIDEO_STRADIS driver, and that one is scheduled to staging and eventually removed unless somebody steps up to maintain it (at which point it should use request_firmware() rather than some magic ioctl). So we'll get rid of it eventually. But in the meantime, the compatibility ioctl code is broken, and this tries to get it to at least limp along (even if Mauro suggested just deleting it entirely, which may be the right thing to do - I don't think the compatibility translation code has ever worked unless you were very lucky). Reported-by: Kees Cook <kees.cook@canonical.com> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | V4L/DVB: v4l: radio: si470x: fix unneeded free_irq() callMarek Szyprowski2010-09-301-1/+1
| | | | | | | | | | | | | | | | | | | | In case of error during probe() the driver calls free_irq() function on not yet allocated irq. This patches fixes the call sequence in case of the error. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: v4l: videobuf: prevent passing a NULL to dma_free_coherent()Pawel Osciak2010-09-301-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | When a driver that uses videobuf-dma-contig is used with the USERPTR memory access method a kernel oops might happen: a NULL address may be passed to dma_free_coherent(). This happens when an application calls REQBUFS and then exits without queuing any buffers. This patch fixes that bug. Signed-off-by: Pawel Osciak <p.osciak@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: ir-core: Fix null dereferences in the protocols sysfs interfaceBrian Rogers2010-09-301-6/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | For some cards, ir_dev->props and ir_dev->raw are both NULL. These cards are using built-in IR decoding instead of raw, and can't easily be made to switch protocols. So upon reading /sys/class/rc/rc?/protocols on such a card, return 'builtin' as the supported and enabled protocol. Return -EINVAL on any attempts to change the protocol. And most important of all, don't crash. Signed-off-by: Brian Rogers <brian@xyzw.org> Acked-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: v4l: s5p-fimc: Fix 3-planar formats handling and pixel offset error ↵Sylwester Nawrocki2010-09-271-50/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | on S5PV210 SoCs Fix DMA engine pixel offset calculation for 3-planar YUV formats. On S5PV210 SoCs horizontal offset is applied as number of pixels, not bytes per line. [mchehab@redhat.com: CodingStyle cleanup] Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: v4l: s5p-fimc: Fix return value on probe() failurePawel Osciak2010-09-271-1/+3
| | | | | | | | | | | | | | | | | | On failed create_workqueue() fimc_probe() was returning 0. Signed-off-by: Pawel Osciak <p.osciak@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: uvcvideo: Restrict frame rates for Chicony CNF7129 webcamLaurent Pinchart2010-09-272-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | At all frame rates except 30fps and 5fps the camera produces very dark pictures. Auto-exposure is probably disabled by the camera at all frame rates except 30fps, making them pretty unusable. Work around the problem by introducing a new RESTRICT_FRAME_RATE quirk that disables all the frame rates except the default one. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: uvcvideo: Fix support for Medion Akoya All-in-one PC integrated webcamLaurent Pinchart2010-09-271-0/+9
| | | | | | | | | | | | | | | | The camera requires the STREAM_NO_FID quirk. Add a corresponding entry in the device IDs list. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: ivtvfb: prevent reading uninitialized stack memoryDan Rosenberg2010-09-271-0/+2
| | | | | | | | | | | | | | | | | | | | | | The FBIOGET_VBLANK device ioctl allows unprivileged users to read 16 bytes of uninitialized stack memory, because the "reserved" member of the fb_vblank struct declared on the stack is not altered or zeroed before being copied back to the user. This patch takes care of it. Signed-off-by: Dan Rosenberg <dan.j.rosenberg@gmail.com> Signed-off-by: Andy Walls <awalls@md.metrocast.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: cx25840: Fix typo in volume control initialization: 65335 vs. 65535Andy Walls2010-09-271-1/+1
| | | | | | | | | | | | | | | | | | The wrong value for the volume control limit, 65335 vs. 65535, prevents proper cx25840 v4l2_subdevice initialization. Reported-by: Igor M. liplianin <liplianin@me.by> Signed-off-by: Andy Walls <awalls@md.metrocast.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: v4l: mem2mem_testdev: add missing release for video_devicePawel Osciak2010-09-271-0/+1
| | | | | | | | | | | | | | | | Video device was not being released on driver remove. Signed-off-by: Pawel Osciak <p.osciak@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: v4l: mem2mem_testdev: fix errorenous comparisonPawel Osciak2010-09-271-1/+1
| | | | | | | | | | | | | | | | | | Output buffer has to be at least the size of input buffer, not the other way around. Signed-off-by: Pawel Osciak <p.osciak@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: mt9v022.c: Fixed compilation warningIonut Gabriel Popescu2010-09-271-3/+0
| | | | | | | | | | | | | | | | | | | | The drivers/media/video/mt9v022.c file, on line 405, tries a "case 0" o a v4l2_mbus_pixelcode enum which don't have an 0 value element, so I got a compile warning. That "case" is useless so it can be removed. Signed-off-by: Ionut Gabriel Popescu <poyo_vl@yahoo.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: mt9m111: added current colorspace at g_fmtMichael Grzeschik2010-09-271-0/+1
| | | | | | | | | | | | Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: mt9m111: cropcap and s_crop check if type is VIDEO_CAPTUREMichael Grzeschik2010-09-271-1/+6
| | | | | | | | | | | | | | Signed-off-by: Philipp Wiesner <p.wiesner@phytec.de> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: mx2_camera: fix a race causing NULL dereferenceBaruch Siach2010-09-271-0/+4
| | | | | | | | | | | | | | | | | | The mx25_camera_irq irq handler may get called after the camera has been deactivated (from mx2_camera_deactivate). Detect this situation, and bail out. Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: gspca - sn9c20x: Bad transfer size of Bayer imagesJean-François Moine2010-09-271-2/+1
| | | | | | | | | | | | | | | | | | | | As the end of frame marker does not contain any pixel, it must not be transferred. Reported-by: Ivo Jager <ivo.jager@siliconfields.net> Signed-off-by: Jean-François Moine <moinejf@free.fr> Cc: stable@kernel.org Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: videobuf-dma-sg: set correct size in last sg elementHans Verkuil2010-09-271-4/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes a nasty memory corruption bug when using userptr I/O. The function videobuf_pages_to_sg() sets up the scatter-gather list for the DMA transfer to the userspace pages. The first transfer is setup correctly (the size is set to PAGE_SIZE - offset), but all other transfers have size PAGE_SIZE. This is wrong for the last transfer which may be less than PAGE_SIZE. Most, if not all, drivers will program the boards DMA engine correctly, i.e. even though the size in the last sg element is wrong, they will do their own size calculations and make sure the right amount is DMA-ed, and so seemingly prevent memory corruption. However, behind the scenes the dynamic DMA mapping support (in lib/swiotlb.c) may create bounce buffers if the memory pages are not in DMA-able memory. This happens for example on a 64-bit linux with a board that only supports 32-bit DMA. These bounce buffers DO use the information in the sg list to determine the size. So while the DMA engine transfers the correct amount of data, when the data is 'bounced' back too much is copied, causing buffer overwrites. The fix is simple: calculate and set the correct size for the last sg list element. Signed-off-by: Hans Verkuil <hans.verkuil@tandberg.com> Cc: stable@kernel.org Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: cx231xx: Avoid an OOPS when card is unknown (card=0)Mauro Carvalho Chehab2010-09-271-6/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As reported by: Carlos Americo Domiciano <c_domiciano@yahoo.com.br>: [ 220.033500] cx231xx v4l2 driver loaded. [ 220.033571] cx231xx #0: New device Conexant Corporation Polaris AV Capturb @ 480 Mbps (1554:5010) with 6 interfaces [ 220.033577] cx231xx #0: registering interface 0 [ 220.033591] cx231xx #0: registering interface 1 [ 220.033654] cx231xx #0: registering interface 6 [ 220.033910] cx231xx #0: Identified as Unknown CX231xx video grabber (card=0) [ 220.033946] BUG: unable to handle kernel NULL pointer dereference at (null) [ 220.033955] IP: [<ffffffffa0d3c8bd>] cx231xx_pre_card_setup+0x5d/0xb0 [cx231xx] Thanks-to: Carlos Americo Domiciano <c_domiciano@yahoo.com.br> Cc: stable@kernel.org Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: dvb: fix smscore_getbuffer() logicRichard Zidlicky2010-09-271-19/+12
| | | | | | | | | | | | | | | | | | | | | | | | Drivers shouldn't sleep while holding a spinlock. A previous workaround were to release the spinlock before callinc schedule(). This patch uses a different approach: it just waits for the siano hardware to answer. Signed-off-by: Richard Zidlicky <rz@linux-m68k.org> Cc: stable@kernel.org Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: dib7000p: add disable sample and hold, and diversity delay parameterOlivier Grenie2010-09-273-1/+8
| | | | | | | | | | | | | | | | | | | | This patch improves the overall driver performance in diversity-reception scenarios. Signed-off-by: Olivier Grenie <olivier.grenie@dibcom.fr> Signed-off-by: Patrick Boettcher <patrick.boettcher@dibcom.fr> Cc: stable@kernel.org Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: dib7770: enable the current mirrorOlivier Grenie2010-09-273-1/+57
| | | | | | | | | | | | | | | | | | | | | | | | | | To improve performance on DiB7770-devices enabling the current mirror is needed. This patch adds an option to the dib7000p-driver to do that and it creates a separate device-entry in dib0700-device to use those changes on hardware which is using the DiB7770. Signed-off-by: Olivier Grenie <olivier.grenie@dibcom.fr> Signed-off-by: Patrick Boettcher <patrick.boettcher@dibcom.fr> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: IR: extend MCE keymapMaxim Levitsky2010-09-271-0/+3
| | | | | | | | | | | | | | | | | | | | | | These keys are found on remote bundled with Toshiba Qosmio F50-10q. Found and tested by, Sami R <maesesami@gmail.com> Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Acked-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: IR: fix keys beeing stuck down foreverMaxim Levitsky2010-09-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The logic in ir_timer_keyup was inverted. In case that values aren't equal, the meaning of the time_is_after_eq_jiffies(ir->keyup_jiffies) is that ir->keyup_jiffies is after the the jiffies or equally that that jiffies are before the the ir->keyup_jiffies which is exactly the situation we want to avoid (that the timeout is in the future) Confusing Eh? Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Acked-by: Jarod Wilson <jarod@redhat.com> Cc: stable@kernel.org Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: IR: fix duty cycle capabilityMaxim Levitsky2010-09-271-1/+1
| | | | | | | | | | | | | | | | Due to typo lirc bridge enabled wrong capability. Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Acked-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: rc-core: increase repeat timeMauro Carvalho Chehab2010-09-272-3/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As reported by Anton Blanchard <anton@samba.org>, double IR events on 2.6.36-rc2 and a DViCO FusionHDTV DVB-T Dual Express are happening: [ 1351.032084] ir_keydown: i2c IR (FusionHDTV): key down event, key 0x0067, scancode 0x0051 [ 1351.281284] ir_keyup: keyup key 0x0067 ie one key down event and one key up event 250ms later. So, we need to increase the repeat timeout, to avoid this bug to hit. As we're doing it at core, this fix is not needed anymore at dib0700 driver. Thanks-to: Anton Blanchard <anton@samba.org> Cc: stable@kernel.org Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: Don't identify PV SBTVD Hybrid as a DibCom deviceMauro Carvalho Chehab2010-09-273-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As reported by Carlos, Prolink Pixelview SBTVD Hybrid is based on Conexant cx231xx + Fujitsu 86A20S demodulator. However, both shares the same USB ID. So, we need to use USB bcdDevice, in order to properly discover what's the board. We know for sure that bcd 0x100 is used for a dib0700 device, while bcd 0x4001 is used for a cx23102 device. This patch reserves two ranges, the first one from 0x0000-0x3f00 for dib0700, and the second from 0x4000-0x4fff for cx231xx devices. This may need fixes in the future, as we get access to other devices. Thanks-to: Carlos Americo Domiciano <c_domiciano@yahoo.com.br> Cc: stable@kernel.org Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: mceusb: add two new ASUS device IDsJarod Wilson2010-09-271-0/+4
| | | | | | | | | | | | | | Reported in lirc sf.net tracker and on lirc mailing list Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: gspca - main: Fix a crash of some webcams on ARM archJason Wang2010-09-271-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When plugging some webcams on ARM, the system crashes. This is because we alloc buffer for an urb through usb_buffer_alloc, the alloced buffer is already in DMA coherent region, so we should set the flag of this urb to URB_NO_TRANSFER_DMA_MAP, otherwise when we submit this urb, the hcd core will handle this address as an non-DMA address and call dma_map_single/sg to map it. On arm architecture, dma_map_single a DMA coherent address will be catched by a BUG_ON(). Signed-off-by: Jason Wang <jason77.wang@gmail.com> Signed-off-by: Jean-François Moine <moinejf@free.fr> Cc: stable@kernel.org Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: Fix regression for BeholdTV ColumbusDmitri Belimov2010-09-271-5/+5
| | | | | | | | | | | | | | | | | | | | | | Some time a go our customers wrote me about problem with our TV card BeholdTV Columbus. It's PCMCIA TV card for notebook. As I understand v4l has some regression with autodetect address of tuners. I can set incorrect I2C address and had report about detect tuner. No any TV of course. When I set correct tuner type and I2C address of the tuners all works well. Signed-off-by: Beholder Intl. Ltd. Dmitry Belimov <d.belimov@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: saa7164: move dereference under NULL checkDan Carpenter2010-09-271-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The original code dereferenced "port" before checking it for NULL. I moved the test down below the check. Also I changed the comparisons a little so people wouldn't get confused and think "port" and "buf" were ints instead of pointers. (Probably that's what lead to this issue in the first place.) There is only one caller for this function and it passes non-NULL pointers, so this is essentially a cleanup rather than a bugfix. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: pvrusb2: remove unneeded NULL checksDan Carpenter2010-09-271-3/+3
| | | | | | | | | | | | | | | | | | | | | | We dereference "maskptr" unconditionally at the start of the function and also inside the call to parse_tlist() towards the end of the function. This function is called from store_val_any() and it always passes a non-NULL pointer. Signed-off-by: Dan Carpenter <error27@gmail.com> Acked-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: opera1: remove unneeded NULL checkDan Carpenter2010-09-271-3/+1
| | | | | | | | | | | | | | | | "fw" is always a non-NULL pointer at this point, and anyway release_firmware() accepts NULL pointers. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: IR: ir-raw-event: null pointer dereferenceDan Carpenter2010-09-271-1/+3
| | | | | | | | | | | | | | | | | | The original code dereferenced ir->raw after freeing it and setting it to NULL. Signed-off-by: Dan Carpenter <error27@gmail.com> Acked-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: unlock on error pathDan Carpenter2010-09-271-1/+2
| | | | | | | | | | | | | | | | If we return directly here then we miss out on some mutex_unlock()s Signed-off-by: Dan Carpenter <error27@gmail.com> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* | V4L/DVB: cx88: Kconfig: Remove EXPERIMENTAL dependency from VIDEO_CX88_ALSAlawrence rust2010-09-271-1/+1
|/ | | | | | | | The cx88-alsa module has been around since January 2006 and has seen no significant changes since September 2007. It is stable in operation and so I believe that the 'experimental' tag is no longer warranted. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB: mantis: Fix IR_CORE dependencyIngo Molnar2010-08-241-1/+1
| | | | | | | | | | | | | | | | This build bug triggers: drivers/built-in.o: In function `mantis_exit': (.text+0x377413): undefined reference to `ir_input_unregister' drivers/built-in.o: In function `mantis_input_init': (.text+0x3774ff): undefined reference to `__ir_input_register' If MANTIS_CORE is enabled but IR_CORE is not. Add the correct dependency. Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* v4l: Remove reference to bkl ioctl in compat ioctl handlingFrederic Weisbecker2010-08-141-6/+1
| | | | | | | | | | | There are no more users of struct file_operations:ioctl. These can be safely removed. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Mauro Carvalho Chehab <mchehab@redhat.com> Cc: John Kacur <jkacur@redhat.com> Cc: Hans Verkuil <hverkuil@xs4all.nl>
* Merge branch 'v4l_for_linus' of ↵Linus Torvalds2010-08-1315-14/+22
|\ | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6 * 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: V4L/DVB: v4l2-ctrls.c: needs to include slab.h V4L/DVB: fix Kconfig to depends on VIDEO_IR V4L/DVB: Fix IR_CORE dependencies
| * V4L/DVB: v4l2-ctrls.c: needs to include slab.hRandy Dunlap2010-08-121-0/+1
| | | | | | | | | | | | | | | | | | | | | | v4l2-ctrls.c needs to include slab.h to prevent build errors: drivers/media/video/v4l2-ctrls.c:766: error: implicit declaration of function 'kzalloc' drivers/media/video/v4l2-ctrls.c:786: error: implicit declaration of function 'kfree' drivers/media/video/v4l2-ctrls.c:1528: error: implicit declaration of function 'kmalloc' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| * V4L/DVB: fix Kconfig to depends on VIDEO_IRMauro Carvalho Chehab2010-08-1210-10/+10
| | | | | | | | | | | | | | warning: (VIDEO_BT848 && MEDIA_SUPPORT && VIDEO_CAPTURE_DRIVERS && VIDEO_DEV && PCI && I2C && VIDEO_V4L2 && INPUT || VIDEO_SAA7134 && MEDIA_SUPPORT && VIDEO_CAPTURE_DRIVERS && VIDEO_V4L2 && VIDEO_DEV && PCI && I2C && INPUT || VIDEO_CX88 && MEDIA_SUPPORT && VIDEO_CAPTURE_DRIVERS && VIDEO_V4L2 && VIDEO_DEV && PCI && I2C && INPUT || VIDEO_IVTV && MEDIA_SUPPORT && VIDEO_CAPTURE_DRIVERS && VIDEO_V4L2 && PCI && I2C && INPUT || VIDEO_CX18 && MEDIA_SUPPORT && VIDEO_CAPTURE_DRIVERS && VIDEO_V4L2 && DVB_CORE && PCI && I2C && EXPERIMENTAL && INPUT || VIDEO_EM28XX && MEDIA_SUPPORT && VIDEO_CAPTURE_DRIVERS && VIDEO_V4L2 && V4L_USB_DRIVERS && USB && VIDEO_DEV && I2C && INPUT || VIDEO_TLG2300 && MEDIA_SUPPORT && VIDEO_CAPTURE_DRIVERS && VIDEO_V4L2 && V4L_USB_DRIVERS && USB && VIDEO_DEV && I2C && INPUT && SND && DVB_CORE || VIDEO_CX231XX && MEDIA_SUPPORT && VIDEO_CAPTURE_DRIVERS && VIDEO_V4L2 && V4L_USB_DRIVERS && USB && VIDEO_DEV && I2C && INPUT || DVB_BUDGET_CI && MEDIA_SUPPORT && DVB_CAPTURE_DRIVERS && DVB_CORE && DVB_BUDGET_CORE && I2C && INPUT || DVB_DM1105 && MEDIA_SUPPORT && DVB_CAPTURE_DRIVERS && DVB_CORE && PCI && I2C && INPUT || VIDEO_GO7007 && STAGING && !STAGING_EXCLUDE_BUILD && VIDEO_DEV && PCI && I2C && INPUT && SND || VIDEO_CX25821 && STAGING && !STAGING_EXCLUDE_BUILD && DVB_CORE && VIDEO_DEV && PCI && I2C && INPUT) selects VIDEO_IR which has unmet direct dependencies (IR_CORE) Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| * V4L/DVB: Fix IR_CORE dependenciesMauro Carvalho Chehab2010-08-124-4/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As pointed by Randy Dunlap <randy.dunlap@oracle.com>: > ERROR: "ir_keydown" [drivers/media/video/ir-kbd-i2c.ko] undefined! > ERROR: "__ir_input_register" [drivers/media/video/ir-kbd-i2c.ko] undefined! > ERROR: "get_rc_map" [drivers/media/video/ir-kbd-i2c.ko] undefined! > ERROR: "ir_input_unregister" [drivers/media/video/ir-kbd-i2c.ko] undefined! > ERROR: "get_rc_map" [drivers/media/video/cx88/cx88xx.ko] undefined! > ERROR: "ir_repeat" [drivers/media/video/cx88/cx88xx.ko] undefined! > ERROR: "ir_input_unregister" [drivers/media/video/cx88/cx88xx.ko] undefined! > ERROR: "ir_keydown" [drivers/media/video/cx88/cx88xx.ko] undefined! > ERROR: "__ir_input_register" [drivers/media/video/cx88/cx88xx.ko] undefined! > ERROR: "get_rc_map" [drivers/media/video/bt8xx/bttv.ko] undefined! > ERROR: "ir_input_unregister" [drivers/media/video/bt8xx/bttv.ko] undefined! > ERROR: "__ir_input_register" [drivers/media/video/bt8xx/bttv.ko] undefined! > ERROR: "ir_g_keycode_from_table" [drivers/media/IR/ir-common.ko] undefined! > > > #5101: > (.text+0x8306e2): undefined reference to `ir_core_debug' > (.text+0x830729): undefined reference to `ir_core_debug' > ir-functions.c:(.text+0x830906): undefined reference to `ir_core_debug' > (.text+0x8309d8): undefined reference to `ir_g_keycode_from_table' > (.text+0x830acf): undefined reference to `ir_core_debug' > (.text+0x830b92): undefined reference to `ir_core_debug' > (.text+0x830bef): undefined reference to `ir_core_debug' > (.text+0x830c6a): undefined reference to `ir_core_debug' > (.text+0x830cf7): undefined reference to `ir_core_debug' > budget-ci.c:(.text+0x89f5c8): undefined reference to `ir_keydown' > budget-ci.c:(.text+0x8a0c58): undefined reference to `get_rc_map' > budget-ci.c:(.text+0x8a0c80): undefined reference to `__ir_input_register' > budget-ci.c:(.text+0x8a0ee0): undefined reference to `get_rc_map' > budget-ci.c:(.text+0x8a11cd): undefined reference to `ir_input_unregister' > (.text+0x8a8adb): undefined reference to `ir_input_unregister' > dvb-usb-remote.c:(.text+0x8a9188): undefined reference to `get_rc_map' > dvb-usb-remote.c:(.text+0x8a91b1): undefined reference to `__ir_input_register' > dvb-usb-remote.c:(.text+0x8a9238): undefined reference to `get_rc_map' > dib0700_core.c:(.text+0x8b04ca): undefined reference to `ir_keydown' > dib0700_devices.c:(.text+0x8b2ea8): undefined reference to `ir_keydown' > dib0700_devices.c:(.text+0x8b2ef0): undefined reference to `ir_keydown' Those breakages seem to be caused by two bad things at IR_CORE Kconfig: 1) cx23885 is using select for IR_CORE; 2) the dvb-usb and sms dependency for IR_CORE were missing. While here, allow users to un-select IR. Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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