From: Jerome Glisse jglisse@redhat.com
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 jglisse@redhat.com Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/radeon_device.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index 066c98b..8867400 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -774,7 +774,7 @@ 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;