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-rw-r--r--sys/dev/pci/drm/radeon/atombios_encoders.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/dev/pci/drm/radeon/atombios_encoders.c b/sys/dev/pci/drm/radeon/atombios_encoders.c
index 0fce73b9a64..70bd84b7ef2 100644
--- a/sys/dev/pci/drm/radeon/atombios_encoders.c
+++ b/sys/dev/pci/drm/radeon/atombios_encoders.c
@@ -198,7 +198,8 @@ void radeon_atom_backlight_init(struct radeon_encoder *radeon_encoder,
* so don't register a backlight device
*/
if ((rdev->pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE) &&
- (rdev->pdev->device == 0x6741))
+ (rdev->pdev->device == 0x6741) &&
+ !dmi_match(DMI_PRODUCT_NAME, "iMac12,1"))
return;
if (!radeon_encoder->enc_priv)