1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
index a13ad9d707cf..0063df9d166d 100644
--- a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
@@ -370,6 +370,7 @@ void radeon_legacy_backlight_init(struct radeon_encoder *radeon_encoder,
         struct backlight_properties props;
         struct radeon_backlight_privdata *pdata;
         uint8_t backlight_level;
+        char bl_name[16];
 
         if (!radeon_encoder->enc_priv)
                 return;
@@ -389,7 +390,9 @@ void radeon_legacy_backlight_init(struct radeon_encoder *radeon_encoder,
         memset(&props, 0, sizeof(props));
         props.max_brightness = RADEON_MAX_BL_LEVEL;
         props.type = BACKLIGHT_RAW;
-        bd = backlight_device_register("radeon_bl", &drm_connector->kdev,
+        snprintf(bl_name, sizeof(bl_name),
+                 "radeon_bl%d", dev->primary->index);
+        bd = backlight_device_register(bl_name, &drm_connector->kdev,
                                        pdata, &radeon_backlight_ops, &props);
         if (IS_ERR(bd)) {
                 DRM_ERROR("Backlight registration failed\n");