From: Anshuman Gupta Date: Mon, 24 Feb 2020 12:40:03 +0000 (+0530) Subject: drm/i915: Add WARN_ON in intel_get_crtc_for_pipe() X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=b1852b73f25b2de737c5ce97e8b0d17d3a232127;p=kernel.git drm/i915: Add WARN_ON in intel_get_crtc_for_pipe() Add a WARN_ON for a disabled pipe in pipe_mask at intel_get_crtc_for_pipe() function. v2: - Use drm_WARN_ON instead of WARN_ON. Cc: Ville Syrjälä Reviewed-by: Ville Syrjälä Signed-off-by: Anshuman Gupta Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20200224124004.26712-7-anshuman.gupta@intel.com --- diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h index 3ca6cf7f39865..61f4628f56024 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -1415,6 +1415,9 @@ intel_get_first_crtc(struct drm_i915_private *dev_priv) static inline struct intel_crtc * intel_get_crtc_for_pipe(struct drm_i915_private *dev_priv, enum pipe pipe) { + /* pipe_to_crtc_mapping may have hole on any of 3 display pipe system */ + drm_WARN_ON(&dev_priv->drm, + !(INTEL_INFO(dev_priv)->pipe_mask & BIT(pipe))); return dev_priv->pipe_to_crtc_mapping[pipe]; }