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From: Greg KH on 30 Jul 2010 14:30
2.6.34-stable review patch. If anyone has any objections, please let us know.

------------------

From: Alex Deucher <alexdeucher(a)gmail.com>

commit 5099fa7f23d3711538cbe9fe072b4ce1ba814035 upstream.

Check ulBootUpMemoryClock on AMD IGPs.

Fix regression noticed by Torsten Kaiser <just.for.lkml(a)googlemail.com>

Signed-off-by: Alex Deucher <alexdeucher(a)gmail.com>
Signed-off-by: Dave Airlie <airlied(a)redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)suse.de>

---
drivers/gpu/drm/radeon/radeon_atombios.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -1030,8 +1030,15 @@ bool radeon_atombios_sideport_present(st
data_offset);
switch (crev) {
case 1:
- if (igp_info->info.ucMemoryType & 0xf0)
- return true;
+ /* AMD IGPS */
+ if ((rdev->family == CHIP_RS690) ||
+ (rdev->family == CHIP_RS740)) {
+ if (igp_info->info.ulBootUpMemoryClock)
+ return true;
+ } else {
+ if (igp_info->info.ucMemoryType & 0xf0)
+ return true;
+ }
break;
case 2:
if (igp_info->info_2.ucMemoryType & 0x0f)


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