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V4L/DVB (11731): buf-dma-contig: remove sync operation 

Remove the videobuf-dma-contig sync operation. Sync is only needed
for noncoherent buffers, and since videobuf-dma-contig is built on
coherent memory allocators the memory is by definition always in sync.

Reported-by: Matthieu CASTET <matthieu.castet@parrot.com>
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Reviewed-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Magnus Damm 2009-04-28 05:45:39 -03:00 committed by Mauro Carvalho Chehab
parent 6e9c1a2a67
commit c9adb4314f
1 changed files with 0 additions and 14 deletions
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14
drivers/media/video/videobuf-dma-contig.c
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@ -182,19 +182,6 @@ static int __videobuf_iolock(struct videobuf_queue *q,
return 0;
}
static int __videobuf_sync(struct videobuf_queue *q,
struct videobuf_buffer *buf)
{
struct videobuf_dma_contig_memory *mem = buf->priv;
BUG_ON(!mem);
MAGIC_CHECK(mem->magic, MAGIC_DC_MEM);
dma_sync_single_for_cpu(q->dev, mem->dma_handle, mem->size,
DMA_FROM_DEVICE);
return 0;
}
static int __videobuf_mmap_free(struct videobuf_queue *q)
{
unsigned int i;
@ -356,7 +343,6 @@ static struct videobuf_qtype_ops qops = {
.alloc = __videobuf_alloc,
.iolock = __videobuf_iolock,
.sync = __videobuf_sync,
.mmap_free = __videobuf_mmap_free,
.mmap_mapper = __videobuf_mmap_mapper,
.video_copy_to_user = __videobuf_copy_to_user,