提交 bbfb44e8 编写于 作者: V Ville Syrjälä 提交者: Jani Nikula

drm/i915: Fix lock dropping in intel_tv_detect()

When intel_tv_detect() fails to do load detection it would forget to
drop the locks and clean up the acquire context. Fix it up.

This is a regression from:
 commit 208bf9fd
 Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
 Date:   Mon Aug 11 13:15:35 2014 +0300

    drm/i915: Fix locking for intel_enable_pipe_a()

v2: Make the code more readable (Chris)
v3: Drop WARN_ON(type < 0) (Chris)

Cc: stable@vger.kernel.org
Cc: Tibor Billes <tbilles@gmx.com>
Reported-by: NTibor Billes <tbilles@gmx.com>
Tested-by: NTibor Billes <tbilles@gmx.com>
Reviewed-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NJani Nikula <jani.nikula@intel.com>
上级 2a592bec
......@@ -1311,6 +1311,7 @@ intel_tv_detect(struct drm_connector *connector, bool force)
{
struct drm_display_mode mode;
struct intel_tv *intel_tv = intel_attached_tv(connector);
enum drm_connector_status status;
int type;
DRM_DEBUG_KMS("[CONNECTOR:%d:%s] force=%d\n",
......@@ -1328,16 +1329,19 @@ intel_tv_detect(struct drm_connector *connector, bool force)
if (intel_get_load_detect_pipe(connector, &mode, &tmp, &ctx)) {
type = intel_tv_detect_type(intel_tv, connector);
intel_release_load_detect_pipe(connector, &tmp);
status = type < 0 ?
connector_status_disconnected :
connector_status_connected;
} else
return connector_status_unknown;
status = connector_status_unknown;
drm_modeset_drop_locks(&ctx);
drm_modeset_acquire_fini(&ctx);
} else
return connector->status;
if (type < 0)
return connector_status_disconnected;
if (status != connector_status_connected)
return status;
intel_tv->type = type;
intel_tv_find_better_format(connector);
......
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