Setting MC_MISC_CNTL.GART_INDEX_REG_EN causes hangs on
some boards on resume. The systems seem to work fine
without touching this bit so leave it as is.
Reported-by: Ondrej Zary <linux@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
---
drivers/gpu/drm/radeon/rs400.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/radeon/rs400.c b/drivers/gpu/drm/radeon/rs400.c
index 233a9b9..d48fdacd 100644
--- a/drivers/gpu/drm/radeon/rs400.c
+++ b/drivers/gpu/drm/radeon/rs400.c
@@ -177,7 +177,8 @@ int rs400_gart_enable(struct radeon_device *rdev)
WREG32_MC(RS480_MC_MISC_CNTL,
(RS480_GART_INDEX_REG_EN | RS690_BLOCK_GFX_D3_EN));
} else {
- WREG32_MC(RS480_MC_MISC_CNTL, RS480_GART_INDEX_REG_EN);
+ /* XXX this causes hangs on a some boards on resume */
+ /*WREG32_MC(RS480_MC_MISC_CNTL, RS480_GART_INDEX_REG_EN);*/
}
/* Enable gart */
WREG32_MC(RS480_AGP_ADDRESS_SPACE_SIZE, (RS480_GART_EN | size_reg));
--
1.8.3.1
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