drm/i915: Replace the aux ddc name switch statement with kasprintf()
Use kasprintf() to generate the "DPDDC-<port>" name for the aux helper.
To deal with errors properly make intel_dp_aux_init() return something,
and adjust the caller to match. It seems we were also missing a
intel_dp_mst_encoder_cleanup() call on edp (non-port A) init failures,
so add that too.
The whole error/cleanup ordering doesn't feel entirely sane to me, but
I'll leave that part alone for now.
v2: Use kasprintf() instead of a table, reorder patches (Chis)
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1447266856-30249-3-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 891a7f8..df2a2d2 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1009,6 +1009,13 @@
}
static void
+intel_dp_aux_fini(struct intel_dp *intel_dp)
+{
+ drm_dp_aux_unregister(&intel_dp->aux);
+ kfree(intel_dp->aux.name);
+}
+
+static int
intel_dp_aux_init(struct intel_dp *intel_dp, struct intel_connector *connector)
{
struct drm_device *dev = intel_dp_to_dev(intel_dp);
@@ -1016,7 +1023,6 @@
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
enum port port = intel_dig_port->port;
struct ddi_vbt_port_info *info = &dev_priv->vbt.ddi_port_info[port];
- const char *name = NULL;
uint32_t porte_aux_ctl_reg = DPA_AUX_CH_CTL;
int ret;
@@ -1043,23 +1049,18 @@
switch (port) {
case PORT_A:
intel_dp->aux_ch_ctl_reg = DPA_AUX_CH_CTL;
- name = "DPDDC-A";
break;
case PORT_B:
intel_dp->aux_ch_ctl_reg = PCH_DPB_AUX_CH_CTL;
- name = "DPDDC-B";
break;
case PORT_C:
intel_dp->aux_ch_ctl_reg = PCH_DPC_AUX_CH_CTL;
- name = "DPDDC-C";
break;
case PORT_D:
intel_dp->aux_ch_ctl_reg = PCH_DPD_AUX_CH_CTL;
- name = "DPDDC-D";
break;
case PORT_E:
intel_dp->aux_ch_ctl_reg = porte_aux_ctl_reg;
- name = "DPDDC-E";
break;
default:
BUG();
@@ -1077,27 +1078,36 @@
if (!IS_HASWELL(dev) && !IS_BROADWELL(dev) && port != PORT_E)
intel_dp->aux_ch_ctl_reg = intel_dp->output_reg + 0x10;
- intel_dp->aux.name = name;
+ intel_dp->aux.name = kasprintf(GFP_KERNEL, "DPDDC-%c", port_name(port));
+ if (!intel_dp->aux.name)
+ return -ENOMEM;
+
intel_dp->aux.dev = dev->dev;
intel_dp->aux.transfer = intel_dp_aux_transfer;
- DRM_DEBUG_KMS("registering %s bus for %s\n", name,
+ DRM_DEBUG_KMS("registering %s bus for %s\n",
+ intel_dp->aux.name,
connector->base.kdev->kobj.name);
ret = drm_dp_aux_register(&intel_dp->aux);
if (ret < 0) {
DRM_ERROR("drm_dp_aux_register() for %s failed (%d)\n",
- name, ret);
- return;
+ intel_dp->aux.name, ret);
+ kfree(intel_dp->aux.name);
+ return ret;
}
ret = sysfs_create_link(&connector->base.kdev->kobj,
&intel_dp->aux.ddc.dev.kobj,
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(&intel_dp->aux);
+ DRM_ERROR("sysfs_create_link() for %s failed (%d)\n",
+ intel_dp->aux.name, ret);
+ intel_dp_aux_fini(intel_dp);
+ return ret;
}
+
+ return 0;
}
static void
@@ -4771,7 +4781,7 @@
struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
struct intel_dp *intel_dp = &intel_dig_port->dp;
- drm_dp_aux_unregister(&intel_dp->aux);
+ intel_dp_aux_fini(intel_dp);
intel_dp_mst_encoder_cleanup(intel_dig_port);
if (is_edp(intel_dp)) {
cancel_delayed_work_sync(&intel_dp->panel_vdd_work);
@@ -5752,7 +5762,7 @@
struct drm_device *dev = intel_encoder->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
enum port port = intel_dig_port->port;
- int type;
+ int type, ret;
intel_dp->pps_pipe = INVALID_PIPE;
@@ -5853,7 +5863,9 @@
pps_unlock(intel_dp);
}
- intel_dp_aux_init(intel_dp, intel_connector);
+ ret = intel_dp_aux_init(intel_dp, intel_connector);
+ if (ret)
+ goto fail;
/* init MST on ports that can support it */
if (HAS_DP_MST(dev) &&
@@ -5862,20 +5874,9 @@
intel_connector->base.base.id);
if (!intel_edp_init_connector(intel_dp, intel_connector)) {
- drm_dp_aux_unregister(&intel_dp->aux);
- if (is_edp(intel_dp)) {
- cancel_delayed_work_sync(&intel_dp->panel_vdd_work);
- /*
- * vdd might still be enabled do to the delayed vdd off.
- * Make sure vdd is actually turned off here.
- */
- pps_lock(intel_dp);
- edp_panel_vdd_off_sync(intel_dp);
- pps_unlock(intel_dp);
- }
- drm_connector_unregister(connector);
- drm_connector_cleanup(connector);
- return false;
+ intel_dp_aux_fini(intel_dp);
+ intel_dp_mst_encoder_cleanup(intel_dig_port);
+ goto fail;
}
intel_dp_add_properties(intel_dp, connector);
@@ -5892,6 +5893,22 @@
i915_debugfs_connector_add(connector);
return true;
+
+fail:
+ if (is_edp(intel_dp)) {
+ cancel_delayed_work_sync(&intel_dp->panel_vdd_work);
+ /*
+ * vdd might still be enabled do to the delayed vdd off.
+ * Make sure vdd is actually turned off here.
+ */
+ pps_lock(intel_dp);
+ edp_panel_vdd_off_sync(intel_dp);
+ pps_unlock(intel_dp);
+ }
+ drm_connector_unregister(connector);
+ drm_connector_cleanup(connector);
+
+ return false;
}
void