From 96e612822a99f6a19f2a5a9e3405da7123a762d6 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Mon, 2 Mar 2015 20:41:31 -0500 Subject: drm/radeon: do a posting read in r600_set_irq 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 Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/radeon/r600.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c index 4cf21ec1abe3..90b007594e32 100644 --- 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; } -- cgit v1.2.3