From: Egbert Eich <eich@suse.de>
Date: Wed, 24 Oct 2012 16:29:49 +0000 (+0200)
Subject: DRM/Radeon: Fix Load Detection on legacy primary DAC.
X-Git-Tag: firefly_0821_release~7541^2~365
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2dda2bb41abe27bdfab30234d56320339a411b3d;p=firefly-linux-kernel-4.4.55.git

DRM/Radeon: Fix Load Detection on legacy primary DAC.

commit 83325d072185899b706de2956170b246585aaec9 upstream.

An uninitialized variable led to broken load detection.

Signed-off-by: Egbert Eich <eich@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
index 3ad3cc62d573..816595396015 100644
--- a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
@@ -650,6 +650,7 @@ static enum drm_connector_status radeon_legacy_primary_dac_detect(struct drm_enc
 	tmp |= RADEON_DAC_RANGE_CNTL_PS2 | RADEON_DAC_CMP_EN;
 	WREG32(RADEON_DAC_CNTL, tmp);
 
+	tmp = dac_macro_cntl;
 	tmp &= ~(RADEON_DAC_PDWN_R |
 		 RADEON_DAC_PDWN_G |
 		 RADEON_DAC_PDWN_B);