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drm/msm: fix IOMMU cleanup for -EPROBE_DEFER

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If probe fails after IOMMU is attached, we need to detach in order to
clean up properly.  Before this change, IOMMU faults would occur if the
probe failed (-EPROBE_DEFER).

Signed-off-by: Stephane Viau <sviau@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Stephane Viau
2014-06-17 10:32:37 -04:00
committed by Rob Clark
parent cf3198c205
commit 87e956e9be
5 changed files with 44 additions and 7 deletions
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1
drivers/gpu/drm/msm/msm_mmu.h
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@@ -22,6 +22,7 @@
struct msm_mmu_funcs {
int (*attach)(struct msm_mmu *mmu, const char **names, int cnt);
void (*detach)(struct msm_mmu *mmu, const char **names, int cnt);
int (*map)(struct msm_mmu *mmu, uint32_t iova, struct sg_table *sgt,
unsigned len, int prot);
int (*unmap)(struct msm_mmu *mmu, uint32_t iova, struct sg_table *sgt,