Commit b7bc596ebbe0cddc97d76ef9309f64471bbf13eb accidently broke backlight control on old mac laptops that use the on-GPU backlight controller. Reported by nathanhi on IRC. Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> Cc: stable@xxxxxxxxxxxxxxx --- drivers/gpu/drm/radeon/radeon_encoders.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c index 6b670b0..275ed45 100644 --- a/drivers/gpu/drm/radeon/radeon_encoders.c +++ b/drivers/gpu/drm/radeon/radeon_encoders.c @@ -179,6 +179,9 @@ static void radeon_encoder_add_backlight(struct radeon_encoder *radeon_encoder, (rdev->pdev->subsystem_vendor == 0x1734) && (rdev->pdev->subsystem_device == 0x1107)) use_bl = false; + /* enable native backlight control on apple */ + else if (rdev->pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE) + use_bl = true; /* disable native backlight control on older asics */ else if (rdev->family < CHIP_R600) use_bl = false; -- 1.8.3.1 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
