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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-06-21 11:03:33 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-06-21 11:03:33 -0700 |
commit | 0728f6c3cab107f0aab2c8ded1292dd2cc41a228 (patch) | |
tree | 1a758a878ac1a17102c09585c072a2ab3d0d3740 /drivers/gpu/drm/panfrost/panfrost_mmu.c | |
parent | db54615e21419c3cb4d699a0b0aa16cc44d0e9da (diff) | |
parent | 5eab9cf87b6c261f4e2f6c7623171cc2f5ea1a9c (diff) | |
download | linux-0728f6c3cab107f0aab2c8ded1292dd2cc41a228.tar.bz2 |
Merge tag 'drm-fixes-2019-06-21' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Just catching up on the week since back from holidays, everything
seems quite sane.
core:
- copy_to_user fix for really legacy codepaths.
vmwgfx:
- two dma fixes
- one virt hw interaction fix
i915:
- modesetting fix
- gvt fix
panfrost:
- BO unmapping fix
imx:
- image converter fixes"
* tag 'drm-fixes-2019-06-21' of git://anongit.freedesktop.org/drm/drm:
drm/i915: Don't clobber M/N values during fastset check
drm: return -EFAULT if copy_to_user() fails
drm/panfrost: Make sure a BO is only unmapped when appropriate
drm/i915/gvt: ignore unexpected pvinfo write
gpu: ipu-v3: image-convert: Fix image downsize coefficients
gpu: ipu-v3: image-convert: Fix input bytesperline for packed formats
gpu: ipu-v3: image-convert: Fix input bytesperline width/height align
drm/vmwgfx: fix a warning due to missing dma_parms
drm/vmwgfx: Honor the sg list segment size limitation
drm/vmwgfx: Use the backdoor port if the HB port is not available
Diffstat (limited to 'drivers/gpu/drm/panfrost/panfrost_mmu.c')
-rw-r--r-- | drivers/gpu/drm/panfrost/panfrost_mmu.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panfrost/panfrost_mmu.c b/drivers/gpu/drm/panfrost/panfrost_mmu.c index 762b1bd2a8c2..92ac995dd9c6 100644 --- a/drivers/gpu/drm/panfrost/panfrost_mmu.c +++ b/drivers/gpu/drm/panfrost/panfrost_mmu.c @@ -156,6 +156,9 @@ int panfrost_mmu_map(struct panfrost_gem_object *bo) struct sg_table *sgt; int ret; + if (WARN_ON(bo->is_mapped)) + return 0; + sgt = drm_gem_shmem_get_pages_sgt(obj); if (WARN_ON(IS_ERR(sgt))) return PTR_ERR(sgt); @@ -189,6 +192,7 @@ int panfrost_mmu_map(struct panfrost_gem_object *bo) pm_runtime_mark_last_busy(pfdev->dev); pm_runtime_put_autosuspend(pfdev->dev); + bo->is_mapped = true; return 0; } @@ -203,6 +207,9 @@ void panfrost_mmu_unmap(struct panfrost_gem_object *bo) size_t unmapped_len = 0; int ret; + if (WARN_ON(!bo->is_mapped)) + return; + dev_dbg(pfdev->dev, "unmap: iova=%llx, len=%zx", iova, len); ret = pm_runtime_get_sync(pfdev->dev); @@ -230,6 +237,7 @@ void panfrost_mmu_unmap(struct panfrost_gem_object *bo) pm_runtime_mark_last_busy(pfdev->dev); pm_runtime_put_autosuspend(pfdev->dev); + bo->is_mapped = false; } static void mmu_tlb_inv_context_s1(void *cookie) |