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Subject[PATCH] media: vb2: unify calling of set_page_dirty_lock
Date
Currently videobuf2-dma-sg checks for dma direction for
every single page and videobuf2-dc lacks any dma direction
checks and calls set_page_dirty_lock unconditionally.

Thus unify and align the invocations of set_page_dirty_lock
for videobuf2-dc, videobuf2-sg memory allocators with
videobuf2-vmalloc, i.e. the pattern used in vmalloc has been
copied to dc and dma-sg.

Suggested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
---
drivers/media/v4l2-core/videobuf2-dma-contig.c | 6 ++++--
drivers/media/v4l2-core/videobuf2-dma-sg.c | 7 +++----
2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/media/v4l2-core/videobuf2-dma-contig.c b/drivers/media/v4l2-core/videobuf2-dma-contig.c
index 9f389f36566d..696e24f9128d 100644
--- a/drivers/media/v4l2-core/videobuf2-dma-contig.c
+++ b/drivers/media/v4l2-core/videobuf2-dma-contig.c
@@ -434,8 +434,10 @@ static void vb2_dc_put_userptr(void *buf_priv)
pages = frame_vector_pages(buf->vec);
/* sgt should exist only if vector contains pages... */
BUG_ON(IS_ERR(pages));
- for (i = 0; i < frame_vector_count(buf->vec); i++)
- set_page_dirty_lock(pages[i]);
+ 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]);
sg_free_table(sgt);
kfree(sgt);
}
diff --git a/drivers/media/v4l2-core/videobuf2-dma-sg.c b/drivers/media/v4l2-core/videobuf2-dma-sg.c
index 6808231a6bdc..753ed3138dcc 100644
--- a/drivers/media/v4l2-core/videobuf2-dma-sg.c
+++ b/drivers/media/v4l2-core/videobuf2-dma-sg.c
@@ -292,11 +292,10 @@ static void vb2_dma_sg_put_userptr(void *buf_priv)
if (buf->vaddr)
vm_unmap_ram(buf->vaddr, buf->num_pages);
sg_free_table(buf->dma_sgt);
- while (--i >= 0) {
- if (buf->dma_dir == DMA_FROM_DEVICE ||
- buf->dma_dir == DMA_BIDIRECTIONAL)
+ if (buf->dma_dir == DMA_FROM_DEVICE ||
+ buf->dma_dir == DMA_BIDIRECTIONAL)
+ while (--i >= 0)
set_page_dirty_lock(buf->pages[i]);
- }
vb2_destroy_framevec(buf->vec);
kfree(buf);
}
--
2.11.0
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