The message is harmless and confusing. On PX systems, there is one ATIF method, but potentially multiple GPUs leading to an error on the GPU with no backlight control. Bug: https://bugzilla.kernel.org/show_bug.cgi?id=115011 Signed-off-by: Alex Deucher <alexander.deucher at amd.com> Cc: Hans de Goede <jwrdegoede at fedoraproject.org> --- drivers/gpu/drm/radeon/radeon_acpi.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_acpi.c b/drivers/gpu/drm/radeon/radeon_acpi.c index 59acd0e..31c9a92 100644 --- a/drivers/gpu/drm/radeon/radeon_acpi.c +++ b/drivers/gpu/drm/radeon/radeon_acpi.c @@ -741,13 +741,6 @@ int radeon_acpi_init(struct radeon_device *rdev) } atif->encoder_for_bl = target; - if (!target) { - /* Brightness change notification is enabled, but we - * didn't find a backlight controller, this should - * never happen. - */ - DRM_ERROR("Cannot find a backlight controller\n"); - } } if (atif->functions.sbios_requests && !atif->functions.system_params) { -- 2.5.5
