From 978d37579c84a47ce060652882f1c5fb6c49cd16 Mon Sep 17 00:00:00 2001 From: fritsch Date: Fri, 23 Jan 2015 09:15:00 +0100 Subject: [PATCH] Radeon: disable RADEON_GEM_GTT_WC for Kabini and Aruba --- .../linux-999.06-radeon-upstream-fixes.patch | 21 +++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 packages/linux/patches/3.17.7/linux-999.06-radeon-upstream-fixes.patch diff --git a/packages/linux/patches/3.17.7/linux-999.06-radeon-upstream-fixes.patch b/packages/linux/patches/3.17.7/linux-999.06-radeon-upstream-fixes.patch new file mode 100644 index 0000000000..1dc6a11592 --- /dev/null +++ b/packages/linux/patches/3.17.7/linux-999.06-radeon-upstream-fixes.patch @@ -0,0 +1,21 @@ +commit 108aa376ae52e634f6465424554fa9319c0a7a61 +Author: Michel Dänzer +Date: Fri Oct 10 18:01:18 2014 +0900 + + drm/radeon: Ignore RADEON_GEM_GTT_WC on Kabini and Aruba + +diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c +index 7f3b1e1..aea7c6e 100644 +--- a/drivers/gpu/drm/radeon/radeon_object.c ++++ b/drivers/gpu/drm/radeon/radeon_object.c +@@ -235,6 +235,10 @@ int radeon_bo_create(struct radeon_device *rdev, + if (!(rdev->flags & RADEON_IS_PCIE)) + bo->flags &= ~(RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC); + ++ /* XXX: Write-combined CPU mappings of GTT seem broken on Kabini and Aruba */ ++ if (rdev->family == CHIP_KABINI || rdev->family == CHIP_ARUBA) ++ bo->flags &= ~RADEON_GEM_GTT_WC; ++ + radeon_ttm_placement_from_domain(bo, domain); + /* Kernel allocation are uninterruptible */ + down_read(&rdev->pm.mclk_lock);