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path: root/drivers/gpu/drm/i915/i915_gem.c
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Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem.c')
-rw-r--r--drivers/gpu/drm/i915/i915_gem.c34
1 files changed, 4 insertions, 30 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 3dd7fc662859..4b23a7814713 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -595,47 +595,21 @@ i915_gem_phys_pwrite(struct drm_i915_gem_object *obj,
struct drm_i915_gem_pwrite *args,
struct drm_file *file)
{
- struct drm_device *dev = obj->base.dev;
void *vaddr = obj->phys_handle->vaddr + args->offset;
char __user *user_data = u64_to_user_ptr(args->data_ptr);
- int ret;
/* We manually control the domain here and pretend that it
* remains coherent i.e. in the GTT domain, like shmem_pwrite.
*/
- lockdep_assert_held(&obj->base.dev->struct_mutex);
- ret = i915_gem_object_wait(obj,
- I915_WAIT_INTERRUPTIBLE |
- I915_WAIT_LOCKED |
- I915_WAIT_ALL,
- MAX_SCHEDULE_TIMEOUT,
- to_rps_client(file));
- if (ret)
- return ret;
-
intel_fb_obj_invalidate(obj, ORIGIN_CPU);
- if (__copy_from_user_inatomic_nocache(vaddr, user_data, args->size)) {
- unsigned long unwritten;
-
- /* The physical object once assigned is fixed for the lifetime
- * of the obj, so we can safely drop the lock and continue
- * to access vaddr.
- */
- mutex_unlock(&dev->struct_mutex);
- unwritten = copy_from_user(vaddr, user_data, args->size);
- mutex_lock(&dev->struct_mutex);
- if (unwritten) {
- ret = -EFAULT;
- goto out;
- }
- }
+ if (copy_from_user(vaddr, user_data, args->size))
+ return -EFAULT;
drm_clflush_virt_range(vaddr, args->size);
- i915_gem_chipset_flush(to_i915(dev));
+ i915_gem_chipset_flush(to_i915(obj->base.dev));
-out:
intel_fb_obj_flush(obj, false, ORIGIN_CPU);
- return ret;
+ return 0;
}
void *i915_gem_object_alloc(struct drm_device *dev)