Messages in this thread Patch in this message | | | From | Kamal Mostafa <> | Subject | [PATCH 3.13.y-ckt 029/156] drm/radeon: do a posting read in si_set_irq | Date | Tue, 7 Apr 2015 15:49:26 -0700 |
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3.13.11-ckt19 -stable review patch. If anyone has any objections, please let me know.
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From: Alex Deucher <alexander.deucher@amd.com>
commit 0586915ec10d0ae60de5cd3381ad25a704760402 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: Kamal Mostafa <kamal@canonical.com> --- drivers/gpu/drm/radeon/si.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index 25ab659..3c3891a 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -5852,6 +5852,9 @@ int si_irq_set(struct radeon_device *rdev) WREG32(CG_THERMAL_INT, thermal_int); + /* posting read */ + RREG32(SRBM_STATUS); + return 0; } -- 1.9.1
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