| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.10 19/55] drm/radeon: do a posting read in r600_set_irq | Date | Tue, 24 Mar 2015 16:42:59 +0100 |
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3.10-stable review patch. If anyone has any objections, please let me know.
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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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- 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 @@ -3459,6 +3459,9 @@ int r600_init(struct radeon_device *rdev rdev->accel_working = false; } + /* posting read */ + RREG32(R_000E50_SRBM_STATUS); + return 0; }
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