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path: root/linux/drivers/media/video/videobuf-dma-sg.c
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2008-07-16videobuf: Fix gather spellingMagnus Damm
Use "scatter gather" instead of "scatter gatter". Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de> --- drivers/media/video/videobuf-dma-sg.c | 2 +- drivers/media/video/videobuf-vmalloc.c | 2 +- include/media/videobuf-dma-sg.h | 2 +- include/media/videobuf-vmalloc.h | 2 +- 4 files changed, 4 insertions(+), 4 deletions(-)
2008-07-04buf-dma-sg.c: avoid clearing memory twiceMauro Carvalho Chehab
From: Christophe Jaillet <jaillet.christophe@wanadoo.fr> 1) Remove a useless initialisation of 'i' 2) Avoid clearing the memory allocated twice (once in 'kcalloc', once in 'sg_init_table') 3) Remove a test that can never trigger. The function returns NULL in such a case, so we know that at this point 'pages[0]' != NULL Signed-off-by: Christophe Jaillet <jaillet.christophe@wanadoo.fr> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-08v4l-dvb: remove support for kernels < 2.6.10Hans Verkuil
From: Hans Verkuil <hverkuil@xs4all.nl> Phase 2 removes support for kernels < 2.6.10. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
2008-07-08v4l-dvb: remove support for kernels < 2.6.0Hans Verkuil
From: Hans Verkuil <hverkuil@xs4all.nl> First phase of the backwards compatibility cleanup: stop supporting kernels older than 2.6.0. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
2008-04-13videobuf-dvb: allow its usage with videobuf-vmallocMauro Carvalho Chehab
From: Mauro Carvalho Chehab <mchehab@infradead.org> videobuf-dvb were still using a function that were videobuf-dma-sg dependent. This patch creates a generic handler for this function. This way, videobuf-dvb can now work with all videobuf implementations. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-13videobuf-dma-sg: Remove unused flagMauro Carvalho Chehab
From: Mauro Carvalho Chehab <mchehab@infradead.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-08media/video/ replace remaining __FUNCTION__ occurrencesMichael Krufky
From: Harvey Harrison <harvey.harrison@gmail.com> __FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
2008-04-02videobuf-dma-sg.c: Avoid NULL dereference and add comment about backwards ↵Brandon Philips
compatibility Signed-off-by: Brandon Philips <bphilips@suse.de> --- linux/drivers/media/video/videobuf-dma-sg.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-)
2008-02-27videobuf-dma-sg: Remove unused variableDouglas Schilling Landgraf
From: Douglas Schilling Landgraf <dougsland@gmail.com> Removed warning message: - videobuf-dma-sg.c: In function 'videobuf_dma_unmap': - videobuf-dma-sg.c:281: warning: unused variable 'dev' Signed-off-by: Douglas Schilling Landgraf <dougsland@gmail.com>
2008-02-25From: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de>Mauro Carvalho Chehab
Subject: Convert videobuf-dma-sg to generic DMA API Date: Tue, 19 Feb 2008 13:40:54 +0100 (CET) videobuf-dma-sg does not need to depend on PCI. Switch it to using generic DMA API, convert all affected drivers, relax Kconfig restriction, improve compile-time type checking, fix some Coding Style violations while at it. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-31Renames videobuf lock to vb_lockMauro Carvalho Chehab
From: Mauro Carvalho Chehab <mchehab@infradead.org> This helps to identify where vb_lock is being used, and find missusages of the locks. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-27[PATCH] static memoryDouglas Schilling Landgraf
From: Douglas Schilling Landgraf <dougsland@gmail.com> - Static memory is always initialized with 0. - Replaced in some cases C99 comments for /* */ Signed-off-by: Douglas Schilling Landgraf <dougsland@gmail.com>
2007-12-10backport: V4L/DVB (6749): v4l-nopage-fixMauro Carvalho Chehab
From: Mauro Carvalho Chehab <mchehab@infradead.org> Original patch from: Andrew Morton <akpm@linux-foundation.org> dont just copy-and-paste stuff. (compile-tested this time) (Andrew submitted an updated version after I've applied it on -hg - The newer patch were replaced at -git) Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-07 v4l-nopage-fixMauro Carvalho Chehab
From: Andrew Morton <akpm@linux-foundation.org> dont just copy-and-paste stuff. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-07Subject: v4l: nopageMauro Carvalho Chehab
From: Nick Piggin <npiggin@suse.de> Convert v4l from nopage to fault. Remove redundant vma range checks. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-11-02Backport some changesets touching S/G codeMauro Carvalho Chehab
From: Mauro Carvalho Chehab <mchehab@infradead.org> kernel-sync: Backport kernel changesets: 45711f1af6eff1a6d010703b4862e0d2b9afd056 117636092a87a28a013a4acb5de5492645ed620f 642f149031d70415d9318b919d50b71e4724adbd Also, added newer entreis at compat.h, to avoid needing to add checks for linux versions inside the source codes. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-17backport changeset 13bcd5d0e21e3ca726965371ada8ff6c64af288fMauro Carvalho Chehab
From: Mauro Carvalho Chehab <mchehab@infradead.org> Original description: Author: Al Viro <viro@ftp.linux.org.uk> Date: Sat Oct 13 08:25:24 2007 +0100 v4l: copy_to_user() is not a good method name Breaks on any target that has copy_to_user() defined as a non-trivial macro. kernel-sync: Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-11 git-dvb: rename videobuf_qtype_ops.copy_to_user()Mauro Carvalho Chehab
From: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-08videobuf_core init always require callback implementationMauro Carvalho Chehab
From: Mauro Carvalho Chehab <mchehab@infradead.org> In the past, videobuf_queue_init were used to initialize PCI DMA videobuffers. This patch renames it, to avoid confusion with the previous kernel API, doing: s/videobuf_queue_init/void videobuf_queue_core_init/ Also, the operations is now part of the function parameter. The function will also add a test if this is defined, otherwise producing BUG. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-08remove videobuf_set_pci_opsMauro Carvalho Chehab
From: Mauro Carvalho Chehab <mchehab@infradead.org> Before the videobuf redesign, a procedure for re-using videobuf without PCI scatter/gather where provided by changing the pci-dependent operations by other operations. With the newer approach, those methods are obsolete and can safelly be removed. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-09-27V4L: Fix a lock inversion in generic videobuf codeMaxim Levitsky
videobuf_qbuf takes q->lock, and then calls q->ops->buf_prepare which by design in all drivers calls videobuf_iolock which calls videobuf_dma_init_user and this takes current->mm->mmap_sem on the other hand if user calls mumap from other thread, sys_munmap takes current->mm->mmap_sem and videobuf_vm_close takes q->lock Since this can occur only for V4L2_MEMORY_MMAP buffers, take current->mm->mmap_sem in qbuf, before q->lock, and don't take current->mm->mmap_sem videobuf_dma_init_user for those buffers Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org> http://thread.gmane.org/gmane.comp.video.video4linux/34978/focus=34981 Reviewed-by: Ricardo Cerqueira <v4l@cerqueira.org>
2007-09-27videobuf cleanup: mmap check is common to all videobuf. Make it at coreMauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org> http://thread.gmane.org/gmane.comp.video.video4linux/34978/focus=34981 Reviewed-by: Ricardo Cerqueira <v4l@cerqueira.org>
2007-08-23Replace video-buf to a more generic approachMauro Carvalho Chehab
video-buf currently does two different tasks: - Manages video buffers with a common code that allows implementing all the V4L2 different modes of buffering; - Controls memory allocations While the first task is generic, the second were written to support PCI DMA Scatter/Gather needs. The original approach can't even work for those video capture hardware that don't support scatter/gather. I did one approach to make it more generic. While the approach worked fine for vivi driver, it were not generic enough to handle USB needs. This patch creates two different modules, one containing the generic video buffer handling (videobuf-core) and another with PCI DMA S/G. After this patch, it would be simpler to write an USB video-buf and a non-SG DMA module. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org> http://thread.gmane.org/gmane.comp.video.video4linux/34978/focus=34981 Reviewed-by: Ricardo Cerqueira <v4l@cerqueira.org>
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