Hi,
>We need to disable stall on memory access after a fault, otherwise the
>device using the iommu will be perma-wedged with no access to memory.
>This was causing drm/msm to be unable to recover the gpu after an iommu
>fault.
>
>Signed-off-by: Rob Clark <[email protected]>
>---
> drivers/iommu/msm_iommu.c | 1 +
> 1 file changed, 1 insertion(+)
>
>diff --git a/drivers/iommu/msm_iommu.c b/drivers/iommu/msm_iommu.c
>index b09692b..f6f596f 100644
>--- a/drivers/iommu/msm_iommu.c
>+++ b/drivers/iommu/msm_iommu.c
>@@ -628,6 +628,7 @@ irqreturn_t msm_iommu_fault_handler(int irq, void *dev_id)
> pr_err("Interesting registers:\n");
> print_ctx_regs(iommu->base, i);
> SET_FSR(iommu->base, i, 0x4000000F);
>+ SET_RESUME(iommu->base, i, 1);
Acked-by: [email protected]
Regards,
Sricharan
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