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| author |  Chris Wilson <chris@chris-wilson.co.uk>
| 2016-04-08 12:11:09 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk>
| 2016-04-11 17:10:56 +0100 |
| commit | 6d19245f187b28541ea9b077f88d8367054823cb (patch) | |
| tree | acb1ec03f6f7cff880511f8fcc9e3887218176d4 /drivers/gpu/drm/i915/i915_gem_dmabuf.c | |
| parent | drm/i915: implement WaClearTdlStateAckDirtyBits (diff) | |
| download | linux-6d19245f187b28541ea9b077f88d8367054823cb.tar.gz linux-6d19245f187b28541ea9b077f88d8367054823cb.tar.bz2 linux-6d19245f187b28541ea9b077f88d8367054823cb.zip | |
drm/i915/dmabuf: Tighten struct_mutex for unmap_dma_buf
We only need the struct_mutex to manipulate the pages_pin_count on the
object, we do not need to hold our BKL when freeing the exported
scatterlist.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1460113874-17366-2-git-send-email-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_dmabuf.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_dmabuf.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/i915_gem_dmabuf.c index 1f3eef6fb345..616f07830b7e 100644 --- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c +++ b/drivers/gpu/drm/i915/i915_gem_dmabuf.c @@ -95,14 +95,12 @@ static void i915_gem_unmap_dma_buf(struct dma_buf_attachment *attachment, { struct drm_i915_gem_object *obj = dma_buf_to_obj(attachment->dmabuf); - mutex_lock(&obj->base.dev->struct_mutex); - dma_unmap_sg(attachment->dev, sg->sgl, sg->nents, dir); sg_free_table(sg); kfree(sg); + mutex_lock(&obj->base.dev->struct_mutex); i915_gem_object_unpin_pages(obj); - mutex_unlock(&obj->base.dev->struct_mutex); } |