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authorAlex Deucher <alexander.deucher@amd.com>2015-03-03 04:41:31 +0300
committerAlex Deucher <alexander.deucher@amd.com>2015-03-04 01:28:27 +0300
commit9d1393f23d5656cdd5f368efd60694d4aeed81d3 (patch)
treeaf0a06a0f71032a7b1eb732f198b750f78c112d3 /drivers/gpu/drm/radeon/r600.c
parent54acf107e4e66d1f4a697e08a7f60dba9fcf07c3 (diff)
downloadlinux-9d1393f23d5656cdd5f368efd60694d4aeed81d3.tar.xz
drm/radeon: do a posting read in r600_set_irq
To make sure the writes go through the pci bridge. bug: https://bugzilla.kernel.org/show_bug.cgi?id=90741 Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu/drm/radeon/r600.c')
-rw-r--r--drivers/gpu/drm/radeon/r600.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 07a71a2488c9..2fcad344492f 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -3784,6 +3784,9 @@ int r600_irq_set(struct radeon_device *rdev)
WREG32(RV770_CG_THERMAL_INT, thermal_int);
}
+ /* posting read */
+ RREG32(R_000E50_SRBM_STATUS);
+
return 0;
}