commit: 4a2b6662c3632176b4fdf012243dd3751367bf1f
From: Jerome Glisse <[email protected]>
Date: Tue, 28 Aug 2012 16:50:22 -0400
Subject: drm/radeon: force dma32 to fix regression rs4xx,rs6xx,rs740

It seems some of those IGP dislike non dma32 page despite what
documentation says. Fix regression since we allowed non dma32
pages. It seems it only affect some revision of those IGP chips
as we don't know which one just force dma32 for all of them.

https://bugzilla.redhat.com/show_bug.cgi?id=785375

Signed-off-by: Jerome Glisse <[email protected]>
Cc: <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
---
 drivers/gpu/drm/radeon/radeon_device.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_device.c 
b/drivers/gpu/drm/radeon/radeon_device.c
index d2e2438..33da8bf 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -1051,7 +1051,7 @@ int radeon_device_init(struct radeon_device *rdev,
        if (rdev->flags & RADEON_IS_AGP)
                rdev->need_dma32 = true;
        if ((rdev->flags & RADEON_IS_PCI) &&
-           (rdev->family < CHIP_RS400))
+           (rdev->family <= CHIP_RS740))
                rdev->need_dma32 = true;
 
        dma_bits = rdev->need_dma32 ? 32 : 40;
-- 
1.7.3.4
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