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| author | Marek Szyprowski <[email protected]> | 2013-06-19 11:56:46 +0000 |
|---|---|---|
| committer | Mauro Carvalho Chehab <[email protected]> | 2013-09-24 16:41:38 +0000 |
| commit | 774d23010f6a7d7d299552f0b1edfbe1ec82c5e7 (patch) | |
| tree | bc7a8ad585e0254b27cee8b21e66dd873bd0f82e /fs/btrfs/async-thread.c | |
| parent | [media] vb2: Allow queuing OUTPUT buffers with zeroed 'bytesused' (diff) | |
| download | kernel-774d23010f6a7d7d299552f0b1edfbe1ec82c5e7.tar.gz kernel-774d23010f6a7d7d299552f0b1edfbe1ec82c5e7.zip | |
[media] videobuf2-dc: Fix support for mappings without struct page in userptr mode
Earlier version of dma-contig allocator in user ptr mode assumed that in
all cases DMA address equals physical address. This was just a special case.
Commit e15dab752d4c588544ccabdbe020a7cc092e23c8 introduced correct support
for converting userpage to dma address, but unfortunately it broke the
support for simple dma address = physical address for the case, when given
physical frame has no struct page associated with it (this happens if one
use for example dma_declare_coherent api or other reserved memory approach).
This commit restores support for such cases.
Signed-off-by: Marek Szyprowski <[email protected]>
[[email protected]: replaced #elsif with #elif]
Signed-off-by: Sylwester Nawrocki <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Diffstat (limited to 'fs/btrfs/async-thread.c')
0 files changed, 0 insertions, 0 deletions