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Diffstat (limited to '')
| -rw-r--r-- | drivers/media/common/videobuf2/videobuf2-dma-contig.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/media/common/videobuf2/videobuf2-dma-contig.c b/drivers/media/common/videobuf2/videobuf2-dma-contig.c index 2fa455d4a0..3d4fd4ef53 100644 --- a/drivers/media/common/videobuf2/videobuf2-dma-contig.c +++ b/drivers/media/common/videobuf2/videobuf2-dma-contig.c @@ -542,13 +542,14 @@ static void vb2_dc_put_userptr(void *buf_priv) */ dma_unmap_sgtable(buf->dev, sgt, buf->dma_dir, DMA_ATTR_SKIP_CPU_SYNC); - pages = frame_vector_pages(buf->vec); - /* sgt should exist only if vector contains pages... */ - BUG_ON(IS_ERR(pages)); if (buf->dma_dir == DMA_FROM_DEVICE || - buf->dma_dir == DMA_BIDIRECTIONAL) - for (i = 0; i < frame_vector_count(buf->vec); i++) - set_page_dirty_lock(pages[i]); + buf->dma_dir == DMA_BIDIRECTIONAL) { + pages = frame_vector_pages(buf->vec); + /* sgt should exist only if vector contains pages... */ + if (!WARN_ON_ONCE(IS_ERR(pages))) + for (i = 0; i < frame_vector_count(buf->vec); i++) + set_page_dirty_lock(pages[i]); + } sg_free_table(sgt); kfree(sgt); } else { |