This is a note to let you know that I've just added the patch titled
drm/radeon: force dma32 to fix regression rs4xx,rs6xx,rs740
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-radeon-force-dma32-to-fix-regression-rs4xx-rs6xx-rs740.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 4a2b6662c3632176b4fdf012243dd3751367bf1f Mon Sep 17 00:00:00 2001
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
From: Jerome Glisse <[email protected]>
commit 4a2b6662c3632176b4fdf012243dd3751367bf1f upstream.
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]>
Signed-off-by: Alex Deucher <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/gpu/drm/radeon/radeon_device.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -772,7 +772,7 @@ int radeon_device_init(struct radeon_dev
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;
Patches currently in stable-queue which might be from [email protected] are
queue-3.4/drm-radeon-implement-acpi-vfct-vbios-fetch-v3.patch
queue-3.4/drm-radeon-force-dma32-to-fix-regression-rs4xx-rs6xx-rs740.patch
queue-3.4/drm-radeon-avoid-turning-off-spread-spectrum-for-used-pll.patch
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