On Tue, Dec 19, 2023 at 12:47:46PM +0200, Jani Nikula wrote: > intel_hdcp_get_repeater_ctl() is supposed to return unsigned register > contents. Returning negative error values is unexpected, and none of the > callers check for that. > > Sort of fix the error cases by returning 0. I don't think we should hit > these cases anyway, and using 0 for the registers is safer than > 0xffffffea (-EINVAL). > > Signed-off-by: Jani Nikula <jani.nik...@intel.com> > --- > drivers/gpu/drm/i915/display/intel_hdcp.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c > b/drivers/gpu/drm/i915/display/intel_hdcp.c > index f9010094ff29..ee29fcb860e4 100644 > --- a/drivers/gpu/drm/i915/display/intel_hdcp.c > +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c > @@ -347,7 +347,7 @@ u32 intel_hdcp_get_repeater_ctl(struct drm_i915_private > *i915, > default: > drm_err(&i915->drm, "Unknown transcoder %d\n", > cpu_transcoder);
These should probably be MISSING_CASE() as well. Anyways, Reviewed-by: Ville Syrjälä <ville.syrj...@linux.intel.com> > - return -EINVAL; > + return 0; > } > } > > @@ -364,7 +364,7 @@ u32 intel_hdcp_get_repeater_ctl(struct drm_i915_private > *i915, > return HDCP_DDIE_REP_PRESENT | HDCP_DDIE_SHA1_M0; > default: > drm_err(&i915->drm, "Unknown port %d\n", port); > - return -EINVAL; > + return 0; > } > } > > -- > 2.39.2 -- Ville Syrjälä Intel
