Thread (255 messages) 255 messages, 5 authors, 2013-01-14
STALE4932d

[PATCH 044/241] DRM/Radeon: Fix Load Detection on legacy primary DAC.

From: Herton Ronaldo Krzesinski <hidden>
Date: 2012-12-13 14:03:31
Also in: lkml
Subsystem: drm drivers, radeon and amdgpu drm drivers, the rest · Maintainers: David Airlie, Simona Vetter, Alex Deucher, Christian König, Linus Torvalds

3.5.7.2 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Egbert Eich <redacted>

commit 83325d072185899b706de2956170b246585aaec9 upstream.

An uninitialized variable led to broken load detection.

Signed-off-by: Egbert Eich <redacted>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Herton Ronaldo Krzesinski <redacted>
---
 drivers/gpu/drm/radeon/radeon_legacy_encoders.c |    1 +
 1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
index 9e62325..8148cf8 100644
--- a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
@@ -651,6 +651,7 @@ 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);
-- 
1.7.9.5
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