[media] media: vb2: add __GFP_NOWARN to dma-sg allocator

Add __GFP_NOWARN parameter to videobuf2 dma-sg allocator to prevent
kernel warning and stack dump if there is not enough memory available.
Videobuf2 and drivers should correctly handle no memory case, so there
is no need for stack dump and extensive log.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/videobuf2-dma-sg.c b/drivers/media/video/videobuf2-dma-sg.c
index b2d9485aac75e7ade363e79a6994af5e003c4534..10a20d9509d982434f456ee300b771c6389f872e 100644 (file)
--- a/drivers/media/video/videobuf2-dma-sg.c
+++ b/drivers/media/video/videobuf2-dma-sg.c
@@ -62,7 +62,7 @@ static void *vb2_dma_sg_alloc(void *alloc_ctx, unsigned long size)
                goto fail_pages_array_alloc;
 
        for (i = 0; i < buf->sg_desc.num_pages; ++i) {
-               buf->pages[i] = alloc_page(GFP_KERNEL | __GFP_ZERO);
+               buf->pages[i] = alloc_page(GFP_KERNEL | __GFP_ZERO | __GFP_NOWARN);
                if (NULL == buf->pages[i])
                        goto fail_pages_alloc;
                sg_set_page(&buf->sg_desc.sglist[i],