From: Dan Carpenter Date: Thu, 13 Oct 2016 08:55:08 +0000 (+0300) Subject: drm/i915: fix a read size argument X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=be4dd651ff79b9fddc46ef330afeedc6560fd1ca;p=linux-beck.git drm/i915: fix a read size argument 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") Reviewed-by: Chris Wilson Cc: Signed-off-by: Dan Carpenter Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/20161013085508.GJ16198@mwanda (cherry picked from commit f7170e2eb8f6bf7ef2032cc0659cd38740bf5b97) Signed-off-by: Jani Nikula --- diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 14a3cf0b7213..ee8aa95967de 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)) DRM_DEBUG_KMS("EDP DPCD : %*ph\n", (int) sizeof(intel_dp->edp_dpcd), intel_dp->edp_dpcd);