6.12-stable review patch. If anyone has any objections, please let me know.
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From: Jani Nikula jani.nikula@intel.com
commit 7603ba81225c815d2ceb4ad52f13e8df4b9d03cc upstream.
Handle encoder and connector init failures in g4x_hdmi_init(). This is similar to g4x_dp_init().
Cc: Sergey Senozhatsky senozhatsky@chromium.org Cc: Ville Syrjala ville.syrjala@linux.intel.com Reported-and-tested-by: Sergey Senozhatsky senozhatsky@chromium.org Closes: https://lore.kernel.org/r/20241031105145.2140590-1-senozhatsky@chromium.org Reviewed-by: Sergey Senozhatsky senozhatsky@chromium.org Link: https://patchwork.freedesktop.org/patch/msgid/cafae7bf1f9ffb8f6a1d7a508cd2ce... Signed-off-by: Jani Nikula jani.nikula@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/i915/display/g4x_hdmi.c | 35 +++++++++++++++++++++----------- drivers/gpu/drm/i915/display/g4x_hdmi.h | 5 ++-- 2 files changed, 26 insertions(+), 14 deletions(-)
--- a/drivers/gpu/drm/i915/display/g4x_hdmi.c +++ b/drivers/gpu/drm/i915/display/g4x_hdmi.c @@ -683,7 +683,7 @@ static bool assert_hdmi_port_valid(struc "Platform does not support HDMI %c\n", port_name(port)); }
-void g4x_hdmi_init(struct drm_i915_private *dev_priv, +bool g4x_hdmi_init(struct drm_i915_private *dev_priv, i915_reg_t hdmi_reg, enum port port) { struct intel_display *display = &dev_priv->display; @@ -693,10 +693,10 @@ void g4x_hdmi_init(struct drm_i915_priva struct intel_connector *intel_connector;
if (!assert_port_valid(dev_priv, port)) - return; + return false;
if (!assert_hdmi_port_valid(dev_priv, port)) - return; + return false;
devdata = intel_bios_encoder_data_lookup(display, port);
@@ -707,15 +707,13 @@ void g4x_hdmi_init(struct drm_i915_priva
dig_port = kzalloc(sizeof(*dig_port), GFP_KERNEL); if (!dig_port) - return; + return false;
dig_port->aux_ch = AUX_CH_NONE;
intel_connector = intel_connector_alloc(); - if (!intel_connector) { - kfree(dig_port); - return; - } + if (!intel_connector) + goto err_connector_alloc;
intel_encoder = &dig_port->base;
@@ -723,9 +721,10 @@ void g4x_hdmi_init(struct drm_i915_priva
mutex_init(&dig_port->hdcp_mutex);
- drm_encoder_init(&dev_priv->drm, &intel_encoder->base, - &intel_hdmi_enc_funcs, DRM_MODE_ENCODER_TMDS, - "HDMI %c", port_name(port)); + if (drm_encoder_init(&dev_priv->drm, &intel_encoder->base, + &intel_hdmi_enc_funcs, DRM_MODE_ENCODER_TMDS, + "HDMI %c", port_name(port))) + goto err_encoder_init;
intel_encoder->hotplug = intel_hdmi_hotplug; intel_encoder->compute_config = g4x_hdmi_compute_config; @@ -788,5 +787,17 @@ void g4x_hdmi_init(struct drm_i915_priva
intel_infoframe_init(dig_port);
- intel_hdmi_init_connector(dig_port, intel_connector); + if (!intel_hdmi_init_connector(dig_port, intel_connector)) + goto err_init_connector; + + return true; + +err_init_connector: + drm_encoder_cleanup(&intel_encoder->base); +err_encoder_init: + kfree(intel_connector); +err_connector_alloc: + kfree(dig_port); + + return false; } --- a/drivers/gpu/drm/i915/display/g4x_hdmi.h +++ b/drivers/gpu/drm/i915/display/g4x_hdmi.h @@ -16,14 +16,15 @@ struct drm_connector; struct drm_i915_private;
#ifdef I915 -void g4x_hdmi_init(struct drm_i915_private *dev_priv, +bool g4x_hdmi_init(struct drm_i915_private *dev_priv, i915_reg_t hdmi_reg, enum port port); int g4x_hdmi_connector_atomic_check(struct drm_connector *connector, struct drm_atomic_state *state); #else -static inline void g4x_hdmi_init(struct drm_i915_private *dev_priv, +static inline bool g4x_hdmi_init(struct drm_i915_private *dev_priv, i915_reg_t hdmi_reg, int port) { + return false; } static inline int g4x_hdmi_connector_atomic_check(struct drm_connector *connector, struct drm_atomic_state *state)