| Message ID | 1312820476-19416-2-git-send-email-mjg@redhat.com (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show |
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index 440e6ec..a3b011b 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -32,6 +32,7 @@ #include <drm/radeon_drm.h> #include <linux/vgaarb.h> #include <linux/vga_switcheroo.h> +#include <linux/efi.h> #include "radeon_reg.h" #include "radeon.h" #include "atom.h" @@ -348,6 +349,9 @@ bool radeon_card_posted(struct radeon_device *rdev) { uint32_t reg; + if (efi_enabled && rdev->pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE) + return false; + /* first check CRTCs */ if (ASIC_IS_DCE41(rdev)) { reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) |
At least some Apples program the GPU into a state that wedges the engine once userspace starts trying to perform accelerated operations. Executing the Atom init scripts gets the hardware back into a working state. The same hardware works fine when booted via BIOS emulation, so let's just execute the init scripts on Apples when we're using EFI. Signed-off-by: Matthew Garrett <mjg@redhat.com> --- drivers/gpu/drm/radeon/radeon_device.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-)