From: Alex Deucher Date: Wed, 22 May 2013 17:29:33 +0000 (-0400) Subject: drm/radeon: narrow scope of Apple re-POST hack X-Git-Tag: firefly_0821_release~3680^2~345^2~8^2~1 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=50a583f64bfe53aae4996965c1d1b25d90ce4f64;p=firefly-linux-kernel-4.4.55.git drm/radeon: narrow scope of Apple re-POST hack This narrows the scope of the apple re-POST hack added in: drm/radeon: re-POST the asic on Apple hardware when booted via EFI That patch prevents UVD from working on macs when booted in EFI mode. The original patch fixed macbook2,1 systems which were r5xx and hence have no UVD. Limit the hack to those systems to prevent UVD breakage on newer systems. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=63935 Cc: Matthew Garrett Signed-off-by: Alex Deucher Acked-by: Matthew Garrett --- diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index af82c9b6a28b..189973836cff 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -467,8 +467,10 @@ bool radeon_card_posted(struct radeon_device *rdev) { uint32_t reg; + /* required for EFI mode on macbook2,1 which uses an r5xx asic */ if (efi_enabled(EFI_BOOT) && - rdev->pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE) + (rdev->pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE) && + (rdev->family < CHIP_R600)) return false; if (ASIC_IS_NODCE(rdev))