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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-02-14 13:34:20 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-02-14 22:30:22 +0000 |
| commit | 65300b1f6e04a905200ac5943cb9bfdadc3651a2 (patch) | |
| tree | be95dc5b041e61f102d4ecf28aeb7b0b41a99ab2 /drivers | |
| parent | b8f2169db98eba2c5009cc67a448dc48a0fd4c48 (diff) | |
| download | blackbird-op-linux-65300b1f6e04a905200ac5943cb9bfdadc3651a2.tar.gz blackbird-op-linux-65300b1f6e04a905200ac5943cb9bfdadc3651a2.zip | |
drm/i915/guc: Don't take struct_mutex for object unreference
We no longer need to take the struct_mutex for freeing objects, and on
the finalisation paths here the mutex is not been used for serialisation
of the pointer access, so remove the BKL wart.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170214133420.7977-1-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_guc_loader.c | 14 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_huc.c | 9 |
2 files changed, 10 insertions, 13 deletions
diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c index 8ef33d88d5a0..9885f760f2ef 100644 --- a/drivers/gpu/drm/i915/intel_guc_loader.c +++ b/drivers/gpu/drm/i915/intel_guc_loader.c @@ -714,12 +714,9 @@ fail: DRM_DEBUG_DRIVER("uC fw fetch status FAIL; err %d, fw %p, obj %p\n", err, fw, uc_fw->obj); - mutex_lock(&dev_priv->drm.struct_mutex); - obj = uc_fw->obj; + obj = fetch_and_zero(&uc_fw->obj); if (obj) i915_gem_object_put(obj); - uc_fw->obj = NULL; - mutex_unlock(&dev_priv->drm.struct_mutex); release_firmware(fw); /* OK even if fw is NULL */ uc_fw->fetch_status = INTEL_UC_FIRMWARE_FAIL; @@ -793,16 +790,17 @@ void intel_guc_init(struct drm_i915_private *dev_priv) void intel_guc_fini(struct drm_i915_private *dev_priv) { struct intel_uc_fw *guc_fw = &dev_priv->guc.fw; + struct drm_i915_gem_object *obj; mutex_lock(&dev_priv->drm.struct_mutex); guc_interrupts_release(dev_priv); i915_guc_submission_disable(dev_priv); i915_guc_submission_fini(dev_priv); - - if (guc_fw->obj) - i915_gem_object_put(guc_fw->obj); - guc_fw->obj = NULL; mutex_unlock(&dev_priv->drm.struct_mutex); + obj = fetch_and_zero(&guc_fw->obj); + if (obj) + i915_gem_object_put(obj); + guc_fw->fetch_status = INTEL_UC_FIRMWARE_NONE; } diff --git a/drivers/gpu/drm/i915/intel_huc.c b/drivers/gpu/drm/i915/intel_huc.c index c144609425f6..c28543d220a2 100644 --- a/drivers/gpu/drm/i915/intel_huc.c +++ b/drivers/gpu/drm/i915/intel_huc.c @@ -274,12 +274,11 @@ fail: void intel_huc_fini(struct drm_i915_private *dev_priv) { struct intel_uc_fw *huc_fw = &dev_priv->huc.fw; + struct drm_i915_gem_object *obj; - mutex_lock(&dev_priv->drm.struct_mutex); - if (huc_fw->obj) - i915_gem_object_put(huc_fw->obj); - huc_fw->obj = NULL; - mutex_unlock(&dev_priv->drm.struct_mutex); + obj = fetch_and_zero(&huc_fw->obj); + if (obj) + i915_gem_object_put(obj); huc_fw->fetch_status = INTEL_UC_FIRMWARE_NONE; } |
