From e5903d399a7b0e5c14673c1206f4aeec2859c730 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Fri, 30 Aug 2013 08:58:20 -0400 Subject: drm/radeon: fix init ordering for r600+ The vram scratch buffer needs to be initialized before the mc is programmed otherwise we program 0 as the GPU address of the default GPU fault page. In most cases we put vram at zero anyway and reserve a page for the legacy vga buffer so in practice this shouldn't cause any problems, but better to make it correct. Was changed in: 6fab3febf6d949b0a12b1e4e73db38e4a177a79e Reported-by: FrankR Huang Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/cik.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'drivers/gpu/drm/radeon/cik.c') diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c index 79124f81c00e..148c539684bb 100644 --- a/drivers/gpu/drm/radeon/cik.c +++ b/drivers/gpu/drm/radeon/cik.c @@ -6951,6 +6951,11 @@ static int cik_startup(struct radeon_device *rdev) /* enable aspm */ cik_program_aspm(rdev); + /* scratch needs to be initialized before MC */ + r = r600_vram_scratch_init(rdev); + if (r) + return r; + cik_mc_program(rdev); if (rdev->flags & RADEON_IS_IGP) { @@ -6980,10 +6985,6 @@ static int cik_startup(struct radeon_device *rdev) } } - r = r600_vram_scratch_init(rdev); - if (r) - return r; - r = cik_pcie_gart_enable(rdev); if (r) return r; -- cgit v1.2.3