| From | Ben Hutchings <> | Date | Tue, 05 May 2015 02:16:39 +0100 | Subject | [PATCH 3.2 080/221] drm/radeon: do a posting read in r600_set_irq |
| |
3.2.69-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deucher@amd.com>
commit 9d1393f23d5656cdd5f368efd60694d4aeed81d3 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> --- drivers/gpu/drm/radeon/r600.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -3156,6 +3156,9 @@ int r600_irq_set(struct radeon_device *r WREG32(DC_HOT_PLUG_DETECT3_INT_CONTROL, hpd3); } + /* posting read */ + RREG32(R_000E50_SRBM_STATUS); + return 0; }
|