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drm/gma500: Drop dev->struct_mutex from mmap offset function 

Simply forgotten about this when I was doing my general cleansing of
simple gem mmap offset functions. There's nothing but core functions
called here, and they all have their own protection already.

Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Acked-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1448271183-20523-20-git-send-email-daniel.vetter@ffwll.ch
hifive-unleashed-5.1
Daniel Vetter 2015-11-23 10:32:52 +01:00
parent 46a0f2234d
commit 0e3089fa50
1 changed files with 3 additions and 10 deletions
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13
drivers/gpu/drm/gma500/gem.c
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@ -62,15 +62,10 @@ int psb_gem_dumb_map_gtt(struct drm_file *file, struct drm_device *dev,
int ret = 0;
struct drm_gem_object *obj;
mutex_lock(&dev->struct_mutex);
/* GEM does all our handle to object mapping */
obj = drm_gem_object_lookup(dev, file, handle);
if (obj == NULL) {
ret = -ENOENT;
goto unlock;
}
/* What validation is needed here ? */
if (obj == NULL)
return -ENOENT;
/* Make it mmapable */
ret = drm_gem_create_mmap_offset(obj);
@ -78,9 +73,7 @@ int psb_gem_dumb_map_gtt(struct drm_file *file, struct drm_device *dev,
goto out;
*offset = drm_vma_node_offset_addr(&obj->vma_node);
out:
drm_gem_object_unreference(obj);
unlock:
mutex_unlock(&dev->struct_mutex);
drm_gem_object_unreference_unlocked(obj);
return ret;
}