Messages in this thread Patch in this message | | | From | Ricardo Ribalda <> | Subject | [PATCH 2/2] media: videobuf2: Exit promptly if size = 0 | Date | Tue, 9 Mar 2021 21:51:08 +0100 |
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Exit as soon as possible if a driver wants to allocate a buffer of size 0, and print a warning to help fixing the issue.
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org> --- drivers/media/common/videobuf2/videobuf2-dma-sg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-dma-sg.c b/drivers/media/common/videobuf2/videobuf2-dma-sg.c index 030e48218687..c5b06a509566 100644 --- a/drivers/media/common/videobuf2/videobuf2-dma-sg.c +++ b/drivers/media/common/videobuf2/videobuf2-dma-sg.c @@ -105,7 +105,7 @@ static void *vb2_dma_sg_alloc(struct device *dev, unsigned long dma_attrs, int ret; int num_pages; - if (WARN_ON(!dev)) + if (WARN_ON(!dev) || WARN_ON(!size)) return ERR_PTR(-EINVAL); buf = kzalloc(sizeof *buf, GFP_KERNEL); -- 2.30.1.766.gb4fecdf3b7-goog
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