Commit 00efd65a authored Nov 02, 2020 by Jianxin Xiong Committed by Christian König Nov 05, 2020

dma-buf: Fix static checker warning



Here is the warning message:

	drivers/dma-buf/dma-buf.c:917 dma_buf_map_attachment()
	error: 'sg_table' dereferencing possible ERR_PTR()

Fix by adding error checking before dereferencing the pointer.

Fixes: ac80cd17 ("dma-buf: Clarify that dma-buf sg lists are page aligned")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jianxin Xiong <jianxin.xiong@intel.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/398485/

parent 2b5b95b1

drivers/dma-buf/dma-buf.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -908,7 +908,7 @@ struct sg_table dma_buf_map_attachment(struct dma_buf_attachment attach,
		}

		#ifdef CONFIG_DMA_API_DEBUG
		{
		if (!IS_ERR(sg_table)) {
		struct scatterlist *sg;
		u64 addr;
		int len;

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