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Date: Tue, 05 May 2015 02:16:39 +0100 From: Ben Hutchings <ben@...adent.org.uk> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org CC: akpm@...ux-foundation.org, "Alex Deucher" <alexander.deucher@....com> 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@....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@....com> Signed-off-by: Ben Hutchings <ben@...adent.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; } -- 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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