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drm/dp: add a hw mutex around the transfer functions. (v2)

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This should avoid races between connector probing and HPD
irqs in the future, currently mode_config.mutex blocks this
possibility.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
2014-06-04 16:02:28 +10:00
parent 885ae1c55a
commit 4f71d0cb76
6 changed files with 29 additions and 20 deletions
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10
drivers/gpu/drm/i915/intel_dp.c
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@@ -702,9 +702,9 @@ intel_dp_aux_init(struct intel_dp *intel_dp, struct intel_connector *connector)
DRM_DEBUG_KMS("registering %s bus for %s\n", name,
connector->base.kdev->kobj.name);
ret = drm_dp_aux_register_i2c_bus(&intel_dp->aux);
ret = drm_dp_aux_register(&intel_dp->aux);
if (ret < 0) {
DRM_ERROR("drm_dp_aux_register_i2c_bus() for %s failed (%d)\n",
DRM_ERROR("drm_dp_aux_register() for %s failed (%d)\n",
name, ret);
return;
}
@@ -714,7 +714,7 @@ intel_dp_aux_init(struct intel_dp *intel_dp, struct intel_connector *connector)
intel_dp->aux.ddc.dev.kobj.name);
if (ret < 0) {
DRM_ERROR("sysfs_create_link() for %s failed (%d)\n", name, ret);
drm_dp_aux_unregister_i2c_bus(&intel_dp->aux);
drm_dp_aux_unregister(&intel_dp->aux);
}
}
@@ -3662,7 +3662,7 @@ void intel_dp_encoder_destroy(struct drm_encoder *encoder)
struct intel_dp *intel_dp = &intel_dig_port->dp;
struct drm_device *dev = intel_dp_to_dev(intel_dp);
drm_dp_aux_unregister_i2c_bus(&intel_dp->aux);
drm_dp_aux_unregister(&intel_dp->aux);
drm_encoder_cleanup(encoder);
if (is_edp(intel_dp)) {
cancel_delayed_work_sync(&intel_dp->panel_vdd_work);
@@ -4244,7 +4244,7 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
intel_dp->psr_setup_done = false;
if (!intel_edp_init_connector(intel_dp, intel_connector, &power_seq)) {
drm_dp_aux_unregister_i2c_bus(&intel_dp->aux);
drm_dp_aux_unregister(&intel_dp->aux);
if (is_edp(intel_dp)) {
cancel_delayed_work_sync(&intel_dp->panel_vdd_work);
mutex_lock(&dev->mode_config.connection_mutex);