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Commit 0f6b8274 authored by Deepak Kumar's avatar Deepak Kumar
Browse files

msm: kgsl: Correctly put process refcount in iommu fault handler 



In iommu fault handler, we do early exit without putting process
refcount in case stall-on-fault is enabled and device mutex is
held by someone else. Fix this by putting process refcount in
case of early exit. This is needed to avoid process leak.

Change-Id: I35c7e6b11deda72ae99a52c62985370e8d431f69
Signed-off-by: default avatarDeepak Kumar <dkumar@codeaurora.org>
parent 3d81cc9c

drivers/gpu/msm/kgsl_iommu.c

+1 −4
Original line number Diff line number Diff line
@@ -864,16 +864,13 @@ static int kgsl_iommu_fault_handler(struct iommu_domain *domain, 
				dev_err(ctx->kgsldev->dev, "*EMPTY*\n");

		}

	}

	if (fault_ret_flag)

		return ret;





	/*

	 * We do not want the h/w to resume fetching data from an iommu

	 * that has faulted, this is better for debugging as it will stall

	 * the GPU and trigger a snapshot. Return EBUSY error.

	 */

	if (test_bit(KGSL_FT_PAGEFAULT_GPUHALT_ENABLE,

	if (!fault_ret_flag && test_bit(KGSL_FT_PAGEFAULT_GPUHALT_ENABLE,

		&adreno_dev->ft_pf_policy) &&

		(flags & IOMMU_FAULT_TRANSACTION_STALLED)) {

		uint32_t sctlr_val;