Am 13.10.2016 10:55, schrieb Dan Carpenter: > We want to read 3 bytes here, but because the parenthesis are in the > wrong place we instead read: > > sizeof(intel_dp->edp_dpcd) == sizeof(intel_dp->edp_dpcd) > > which is one byte. > > Fixes: fe5a66f91c88 ("drm/i915: Read PSR caps/intermediate freqs/etc. only once on eDP") > Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> > > diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c > index 14a3cf0..ee8aa95 100644 > --- a/drivers/gpu/drm/i915/intel_dp.c > +++ b/drivers/gpu/drm/i915/intel_dp.c > @@ -3551,8 +3551,8 @@ intel_edp_init_dpcd(struct intel_dp *intel_dp) > /* Read the eDP Display control capabilities registers */ > if ((intel_dp->dpcd[DP_EDP_CONFIGURATION_CAP] & DP_DPCD_DISPLAY_CONTROL_CAPABLE) && > drm_dp_dpcd_read(&intel_dp->aux, DP_EDP_DPCD_REV, > - intel_dp->edp_dpcd, sizeof(intel_dp->edp_dpcd) == > - sizeof(intel_dp->edp_dpcd))) > + intel_dp->edp_dpcd, sizeof(intel_dp->edp_dpcd)) == > + sizeof(intel_dp->edp_dpcd)) perhaps we can morph that into something more readable ? I would suggest: if (intel_dp->dpcd[DP_EDP_CONFIGURATION_CAP] & DP_DPCD_DISPLAY_CONTROL_CAPABLE) { size_t size=sizeof(intel_dp->edp_dpcd); /* == EDP_DISPLAY_CTL_CAP_SIZE */ int ret; ret=drm_dp_dpcd_read(&intel_dp->aux, DP_EDP_DPCD_REV,intel_dp->edp_dpcd,size); if (ret != size ) ...... } this way it improves readability and reduces line length. > DRM_DEBUG_KMS("EDP DPCD : %*ph\n", (int) sizeof(intel_dp->edp_dpcd), > intel_dp->edp_dpcd); > > -- > To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel