msm: ipa3: Fix null pointer dereference error



If smmu is not enabled, smmu context device check
was missing before accessing it which was resulting
in null pointer dereference. Now adding check
before accessing it.

Change-Id: I94393524c79847a165ba605d34906525640b359a
Signed-off-by: Cheng Zeng <chenzeng@codeaurora.org>

parent ccad254c

drivers/platform/msm/ipa/ipa_v3/ipa_nat.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -179,7 +179,7 @@ static int ipa3_nat_ipv6ct_mmap(
		/*
		* Check if no smmu or non dma coherent
		*/
		if (!cb->valid \|\| !dev_is_dma_coherent(cb->dev)) {
		if (cb && cb->dev && (!cb->valid \|\| !dev_is_dma_coherent(cb->dev))) {

		IPADBG("Either smmu valid=%u and/or DMA coherent=%u false\n",
		cb->valid, !dev_is_dma_coherent(cb->dev));