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drm/radeon/kms: avoid oops on mac r4xx cards 

They don't have an atombios so don't attempt to use it for
eng/mem clocks.

Reported by spoonb on #radeon
fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=28671

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2010-06-22 21:58:26 -04:00 committed by Dave Airlie
parent b26c949755
commit 07bb084c93
1 changed files with 7 additions and 0 deletions
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7
drivers/gpu/drm/radeon/radeon_asic.c
View File

@ -780,6 +780,13 @@ int radeon_asic_init(struct radeon_device *rdev)
case CHIP_R423:
case CHIP_RV410:
rdev->asic = &r420_asic;
/* handle macs */
if (rdev->bios == NULL) {
rdev->asic->get_engine_clock = &radeon_legacy_get_engine_clock;
rdev->asic->set_engine_clock = &radeon_legacy_set_engine_clock;
rdev->asic->get_memory_clock = &radeon_legacy_get_memory_clock;
rdev->asic->set_memory_clock = NULL;
}
break;
case CHIP_RS400:
case CHIP_RS480: