drm/i915: Permit pinning whilst the device is 'suspended'

As pinning (allocating and binding GTT memory) does not actually invoke
GPU commands, it is safe, and indeed is attempted, during resumption
from suspension:

  [drm:intel_init_clock_gating] *ERROR* failed to pin power context: -16

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reported-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: stable@kernel.org
Signed-off-by: Eric Anholt <eric@anholt.net>

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 0330c3aa8032dba92b8564708caa7f7c3771ef28..21950ef987c78c51a9df7b5f459e152ff1a51893 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2582,9 +2582,6 @@ i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, unsigned alignment)
        bool retry_alloc = false;
        int ret;
 
-       if (dev_priv->mm.suspended)
-               return -EBUSY;
-
        if (obj_priv->madv != I915_MADV_WILLNEED) {
                DRM_ERROR("Attempting to bind a purgeable object\n");
                return -EINVAL;