We accidentally forgot to set "ret" on this error path so it means we return NULL instead of an error pointer. The caller checks for NULL and changes it to an error pointer so it doesn't cause an issue at run time.
Signed-off-by: Dan Carpenter dan.carpenter@oracle.com
diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c index 9edabce0b8ab..5b44ef226904 100644 --- a/drivers/dma-buf/udmabuf.c +++ b/drivers/dma-buf/udmabuf.c @@ -61,8 +61,10 @@ static struct sg_table *map_udmabuf(struct dma_buf_attachment *at, GFP_KERNEL); if (ret < 0) goto err; - if (!dma_map_sg(at->dev, sg->sgl, sg->nents, direction)) + if (!dma_map_sg(at->dev, sg->sgl, sg->nents, direction)) { + ret = -EINVAL; goto err; + } return sg;
err:
On Fri, Sep 14, 2018 at 09:56:15AM +0300, Dan Carpenter wrote:
We accidentally forgot to set "ret" on this error path so it means we return NULL instead of an error pointer. The caller checks for NULL and changes it to an error pointer so it doesn't cause an issue at run time.
Pushed to drm-misc-next.
thanks, Gerd
linaro-mm-sig@lists.linaro.org
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Dan Carpenter -
Gerd Hoffmann