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Commit 19b16b12 authored by Rama Krishna Phani A's avatar Rama Krishna Phani A
Browse files

msm: mhi_dev: Add proper check before accessing variable 



Descriptor is being accessed with out any check.
Add proper check before accessing descriptor variable.

Change-Id: I742fc4f8d7c252902277bdea8e479f2ac4dfc6e7
Signed-off-by: default avatarRama Krishna Phani A <rphani@codeaurora.org>
parent 4c8629bc

drivers/platform/msm/mhi_dev/mhi.c

+5 −0
Original line number Diff line number Diff line
@@ -323,6 +323,11 @@ static int mhi_trigger_msi_edma(struct mhi_dev_ring *ring, u32 idx) 
				msi_buf->dma_addr,

				sizeof(u32),

				DMA_PREP_INTERRUPT);

	if (!descriptor) {

		pr_err("%s(): desc is null, MSI to Host failed\n", __func__);

		spin_unlock_irqrestore(&mhi_ctx->msi_lock, flags);

		return -EFAULT;

	}



	descriptor->callback_param = msi_buf;

	descriptor->callback = msi_trigger_completion_cb;