From: Ville Syrjälä Date: Fri, 16 Jun 2023 14:08:16 +0000 (+0300) Subject: drm/i915: Assert that device info bitmasks have enough bits X-Git-Tag: v6.6.7~1918^2~17^2~55 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ce6ea7eeff2db080de4bfd651ae37818a46777cc;p=platform%2Fkernel%2Flinux-starfive.git drm/i915: Assert that device info bitmasks have enough bits Sprinkle in some BUILD_BUG_ON()s to make sure some of the bitmasks used in the device info have enough bits. Do we have a better place for this sort of stuff? v2: Relocate to the new place Reviewed-by: Jani Nikula Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20230616140820.11726-4-ville.syrjala@linux.intel.com --- diff --git a/drivers/gpu/drm/i915/display/intel_display_device.c b/drivers/gpu/drm/i915/display/intel_display_device.c index b2f6f05..f87470d 100644 --- a/drivers/gpu/drm/i915/display/intel_display_device.c +++ b/drivers/gpu/drm/i915/display/intel_display_device.c @@ -858,6 +858,10 @@ void intel_display_device_info_runtime_init(struct drm_i915_private *i915) struct intel_display_runtime_info *display_runtime = DISPLAY_RUNTIME_INFO(i915); enum pipe pipe; + BUILD_BUG_ON(BITS_PER_TYPE(display_runtime->pipe_mask) < I915_MAX_PIPES); + BUILD_BUG_ON(BITS_PER_TYPE(display_runtime->cpu_transcoder_mask) < I915_MAX_TRANSCODERS); + BUILD_BUG_ON(BITS_PER_TYPE(display_runtime->port_mask) < I915_MAX_PORTS); + /* Wa_14011765242: adl-s A0,A1 */ if (IS_ADLS_DISPLAY_STEP(i915, STEP_A0, STEP_A2)) for_each_pipe(i915, pipe)