We need to lock the object to move it to the correct domain,
add the missing lock.

Signed-off-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellst...@linux.intel.com>
---
 drivers/gpu/drm/i915/gem/i915_gem_domain.c | 41 ++++++++++------------
 1 file changed, 19 insertions(+), 22 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_domain.c 
b/drivers/gpu/drm/i915/gem/i915_gem_domain.c
index 41dae0d83dbb..e3537922183b 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_domain.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_domain.c
@@ -456,13 +456,7 @@ i915_gem_set_domain_ioctl(struct drm_device *dev, void 
*data,
                 * userptr validity
                 */
                err = i915_gem_object_userptr_validate(obj);
-               if (!err)
-                       err = i915_gem_object_wait(obj,
-                                                  I915_WAIT_INTERRUPTIBLE |
-                                                  I915_WAIT_PRIORITY |
-                                                  (write_domain ? 
I915_WAIT_ALL : 0),
-                                                  MAX_SCHEDULE_TIMEOUT);
-               goto out;
+               goto out_wait;
        }
 
        /*
@@ -476,6 +470,10 @@ i915_gem_set_domain_ioctl(struct drm_device *dev, void 
*data,
                goto out;
        }
 
+       err = i915_gem_object_lock_interruptible(obj, NULL);
+       if (err)
+               goto out;
+
        /*
         * Flush and acquire obj->pages so that we are coherent through
         * direct access in memory with previous cached writes through
@@ -487,7 +485,7 @@ i915_gem_set_domain_ioctl(struct drm_device *dev, void 
*data,
         */
        err = i915_gem_object_pin_pages(obj);
        if (err)
-               goto out;
+               goto out_unlock;
 
        /*
         * Already in the desired write domain? Nothing for us to do!
@@ -500,10 +498,6 @@ i915_gem_set_domain_ioctl(struct drm_device *dev, void 
*data,
         * without having to further check the requested write_domain.
         */
        if (READ_ONCE(obj->write_domain) == read_domains)
-               goto out_wait;
-
-       err = i915_gem_object_lock_interruptible(obj, NULL);
-       if (err)
                goto out_unpin;
 
        if (read_domains & I915_GEM_DOMAIN_WC)
@@ -513,19 +507,22 @@ i915_gem_set_domain_ioctl(struct drm_device *dev, void 
*data,
        else
                i915_gem_object_set_to_cpu_domain(obj, write_domain);
 
-       i915_gem_object_unlock(obj);
+out_unpin:
+       i915_gem_object_unpin_pages(obj);
 
+out_unlock:
+       i915_gem_object_unlock(obj);
 out_wait:
-       err = i915_gem_object_wait(obj,
-                                  I915_WAIT_INTERRUPTIBLE |
-                                  I915_WAIT_PRIORITY |
-                                  (write_domain ? I915_WAIT_ALL : 0),
-                                  MAX_SCHEDULE_TIMEOUT);
-       if (write_domain)
-               i915_gem_object_invalidate_frontbuffer(obj, ORIGIN_CPU);
+       if (!err) {
+               err = i915_gem_object_wait(obj,
+                                         I915_WAIT_INTERRUPTIBLE |
+                                         I915_WAIT_PRIORITY |
+                                         (write_domain ? I915_WAIT_ALL : 0),
+                                         MAX_SCHEDULE_TIMEOUT);
+               if (write_domain)
+                       i915_gem_object_invalidate_frontbuffer(obj, ORIGIN_CPU);
+       }
 
-out_unpin:
-       i915_gem_object_unpin_pages(obj);
 out:
        i915_gem_object_put(obj);
        return err;
-- 
2.31.0

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