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Commit 5629bf35 authored by Shubhraprakash Das's avatar Shubhraprakash Das Committed by Stephen Boyd
Browse files

msm: kgsl: Fix checking of remote iommu spin lock initialization 



If remote spin lock is not configured to be used then the
initialization function will return a NULL value. Check this
value before using it.

Change-Id: Iacb4b7914a93e7aefcd20341ecedbaa466c98acb
Signed-off-by: default avatarShubhraprakash Das <sadas@codeaurora.org>
parent 87b1dc2a

drivers/gpu/msm/kgsl_iommu.c

+9 −9
Original line number Diff line number Diff line
@@ -920,15 +920,15 @@ static int kgsl_iommu_init_sync_lock(struct kgsl_mmu *mmu) 


	iommu_access_ops = get_iommu_access_ops_v0();



	if (iommu_access_ops && iommu_access_ops->iommu_lock_initialize)

		lock_phy_addr = (iommu_access_ops->iommu_lock_initialize()

			- MSM_SHARED_RAM_BASE + msm_shared_ram_phys);



	if (iommu_access_ops && iommu_access_ops->iommu_lock_initialize) {

		lock_phy_addr = (uint32_t)

				iommu_access_ops->iommu_lock_initialize();

		if (!lock_phy_addr) {

			iommu_access_ops = NULL;

		KGSL_DRV_ERR(mmu->device,

				"GPU CPU sync lock is not supported by kernel\n");

		return -ENXIO;

			return status;

		}

		lock_phy_addr = lock_phy_addr - (uint32_t)MSM_SHARED_RAM_BASE +

				(uint32_t)msm_shared_ram_phys;

	}



	/* Align the physical address to PAGE boundary and store the offset */