| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.10 20/55] drm/radeon: do a posting read in si_set_irq | Date | Tue, 24 Mar 2015 16:43:00 +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 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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/gpu/drm/radeon/si.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -5778,5 +5778,8 @@ int si_set_uvd_clocks(struct radeon_devi mdelay(100); + /* posting read */ + RREG32(SRBM_STATUS); + return 0; }
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