iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[media] coda: drop dma_sync_single_for_device in coda_bitstream_queue

Browse Source 
Issuing a cache flush for the whole bitstream buffer is not optimal in the first
place when only a part of it was written. But given that the buffer is mapped in
writecombine mode, it is not needed at all.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Tested-by: Ian Molton <imolton@ad-holdings.co.uk>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Philipp Zabel 2015-03-25 13:45:09 -03:00 committed by Mauro Carvalho Chehab
parent 582d887211
commit 8191919bff
1 changed files with 0 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/media/platform/coda/coda-bit.c
View File

@ -181,10 +181,6 @@ static int coda_bitstream_queue(struct coda_ctx *ctx,
if (n < src_size) if (n < src_size)
return -ENOSPC; return -ENOSPC;
dma_sync_single_for_device(&ctx->dev->plat_dev->dev,
ctx->bitstream.paddr, ctx->bitstream.size,
DMA_TO_DEVICE);
src_buf->v4l2_buf.sequence = ctx->qsequence++; src_buf->v4l2_buf.sequence = ctx->qsequence++;
return 0; return 0;