3.19-stable review patch. If anyone has any objections, please let me know.
------------------ From: "Nathan-J. Hirschauer" <[email protected]> commit 7a26f9ad1b5badfd0200ce2262ad696e2a6b7fbb upstream. Commit b7bc596ebbe0 ("drm/radeon: disable native backlight control on pre-r6xx asics (v2)") accidently broke backlight control on old mac laptops that use the on-GPU backlight controller. Signed-off-by: Nathan-J. Hirschauer <[email protected]> Signed-off-by: Alex Deucher <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/gpu/drm/radeon/radeon_encoders.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/gpu/drm/radeon/radeon_encoders.c +++ b/drivers/gpu/drm/radeon/radeon_encoders.c @@ -179,9 +179,12 @@ static void radeon_encoder_add_backlight (rdev->pdev->subsystem_vendor == 0x1734) && (rdev->pdev->subsystem_device == 0x1107)) use_bl = false; +/* Older PPC macs use on-GPU backlight controller */ +#ifndef CONFIG_PPC_PMAC /* disable native backlight control on older asics */ else if (rdev->family < CHIP_R600) use_bl = false; +#endif else use_bl = true; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
