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Date: Tue, 7 Apr 2015 14:49:58 +0200 From: Jiri Slaby <jslaby@...e.cz> To: stable@...r.kernel.org Cc: linux-kernel@...r.kernel.org, Alex Deucher <alexander.deucher@....com>, Jiri Slaby <jslaby@...e.cz> Subject: [PATCH 3.12 029/155] drm/radeon: do a posting read in cik_set_irq From: Alex Deucher <alexander.deucher@....com> 3.12-stable review patch. If anyone has any objections, please let me know. =============== commit cffefd9bb31cd35ab745d3b49005d10616d25bdc 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@....com> Signed-off-by: Jiri Slaby <jslaby@...e.cz> --- drivers/gpu/drm/radeon/cik.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c index 6e2e4a859047..bb4c6573a525 100644 --- a/drivers/gpu/drm/radeon/cik.c +++ b/drivers/gpu/drm/radeon/cik.c @@ -6352,6 +6352,9 @@ int cik_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; } -- 2.3.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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