diff options
| author |   Michel Dänzer <michel.daenzer@amd.com> | 2015-11-05 17:25:26 +0900 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2015-11-16 11:05:43 -0500 |
| commit | 96ea47c0ec8c012509116bee8c57414281428fc4 (patch) | |
| tree | d6b598187032d20973000a28e1fa847345c86e1f /drivers/gpu/drm/radeon | |
| parent | Revert "drm/rockchip: Convert the probe function to the generic drm_of_component_probe()" (diff) | |
| download | linux-dev-96ea47c0ec8c012509116bee8c57414281428fc4.tar.xz linux-dev-96ea47c0ec8c012509116bee8c57414281428fc4.zip | |
drm/radeon: Disable uncacheable CPU mappings of GTT with RV6xx
They reportedly cause random GPU hangs.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91268
Reviewed-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_object.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c index d3024883b844..a35f5af77c6a 100644 --- a/drivers/gpu/drm/radeon/radeon_object.c +++ b/drivers/gpu/drm/radeon/radeon_object.c @@ -221,6 +221,12 @@ int radeon_bo_create(struct radeon_device *rdev, if (!(rdev->flags & RADEON_IS_PCIE)) bo->flags &= ~(RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC); + /* Write-combined CPU mappings of GTT cause GPU hangs with RV6xx + * See https://bugs.freedesktop.org/show_bug.cgi?id=91268 + */ + if (rdev->family >= CHIP_RV610 && rdev->family <= CHIP_RV635) + bo->flags &= ~(RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC); + #ifdef CONFIG_X86_32 /* XXX: Write-combined CPU mappings of GTT seem broken on 32-bit * See https://bugs.freedesktop.org/show_bug.cgi?id=84627 |