diff options
| author | Jani Nikula <jani.nikula@intel.com> | 2012-11-12 18:31:35 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-11-26 12:14:17 -0800 |
| commit | 93010a5f6f58093d5d2204a61cdaf6bf17848d09 (patch) | |
| tree | 651398d67058c85c04a652912b8d8ff058b6e0c0 | |
| parent | 09390c7bc9fe02c5d5565d9701e2c26c94c08c96 (diff) | |
drm/i915/sdvo: clean up connectors on intel_sdvo_init() failures
commit d0ddfbd3d1346c1f481ec2289eef350cdba64b42 upstream.
Any failures in intel_sdvo_init() after the intel_sdvo_setup_output() call
left behind ghost connectors, attached (with a dangling pointer) to the
sdvo that has been cleaned up and freed. Properly destroy any connectors
attached to the encoder.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=46381
CC: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: bjo@nord-west.org
[danvet: added a comment to explain why we need to clean up connectors
even when sdvo_output_setup fails.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/i915/intel_sdvo.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c index 20cb52dfcb5a..d554f6476137 100644 --- a/drivers/gpu/drm/i915/intel_sdvo.c +++ b/drivers/gpu/drm/i915/intel_sdvo.c @@ -2287,6 +2287,18 @@ intel_sdvo_output_setup(struct intel_sdvo *intel_sdvo, uint16_t flags) return true; } +static void intel_sdvo_output_cleanup(struct intel_sdvo *intel_sdvo) +{ + struct drm_device *dev = intel_sdvo->base.base.dev; + struct drm_connector *connector, *tmp; + + list_for_each_entry_safe(connector, tmp, + &dev->mode_config.connector_list, head) { + if (intel_attached_encoder(connector) == &intel_sdvo->base) + intel_sdvo_destroy(connector); + } +} + static bool intel_sdvo_tv_create_property(struct intel_sdvo *intel_sdvo, struct intel_sdvo_connector *intel_sdvo_connector, int type) @@ -2606,7 +2618,8 @@ bool intel_sdvo_init(struct drm_device *dev, uint32_t sdvo_reg, bool is_sdvob) intel_sdvo->caps.output_flags) != true) { DRM_DEBUG_KMS("SDVO output failed to setup on %s\n", SDVO_NAME(intel_sdvo)); - goto err; + /* Output_setup can leave behind connectors! */ + goto err_output; } /* Only enable the hotplug irq if we need it, to work around noisy @@ -2619,12 +2632,12 @@ bool intel_sdvo_init(struct drm_device *dev, uint32_t sdvo_reg, bool is_sdvob) /* Set the input timing to the screen. Assume always input 0. */ if (!intel_sdvo_set_target_input(intel_sdvo)) - goto err; + goto err_output; if (!intel_sdvo_get_input_pixel_clock_range(intel_sdvo, &intel_sdvo->pixel_clock_min, &intel_sdvo->pixel_clock_max)) - goto err; + goto err_output; DRM_DEBUG_KMS("%s device VID/DID: %02X:%02X.%02X, " "clock range %dMHz - %dMHz, " @@ -2644,6 +2657,9 @@ bool intel_sdvo_init(struct drm_device *dev, uint32_t sdvo_reg, bool is_sdvob) (SDVO_OUTPUT_TMDS1 | SDVO_OUTPUT_RGB1) ? 'Y' : 'N'); return true; +err_output: + intel_sdvo_output_cleanup(intel_sdvo); + err: drm_encoder_cleanup(&intel_encoder->base); i2c_del_adapter(&intel_sdvo->ddc); |