diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2015-03-02 20:42:53 -0500 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2015-05-09 23:16:23 +0100 |
| commit | 4cd3e1ef38f02f5c29416fee26f0917f477d8aa7 (patch) | |
| tree | 69d6a85bf1f2971c313f5de497250e3addd9494a | |
| parent | 360ce682f25589ce8e86f4829495d52559c4fa9b (diff) | |
drm/radeon: do a posting read in evergreen_set_irq
commit c320bb5f6dc0cb88a811cbaf839303e0a3916a92 upstream.
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>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
| -rw-r--r-- | drivers/gpu/drm/radeon/evergreen.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index 9b3f787c54f2..5d78973a9d67 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -2631,6 +2631,9 @@ int evergreen_irq_set(struct radeon_device *rdev) WREG32(DC_HPD5_INT_CONTROL, hpd5); WREG32(DC_HPD6_INT_CONTROL, hpd6); + /* posting read */ + RREG32(SRBM_STATUS); + return 0; } |