diff --git a/drivers/ide/cmd640.c b/drivers/ide/cmd640.c
index 1a32d62ed86b..cb11938ba684 100644
--- a/drivers/ide/cmd640.c
+++ b/drivers/ide/cmd640.c
@@ -605,7 +605,7 @@ static void cmd640_set_pio_mode(ide_drive_t *drive, const u8 pio)
 }
 #endif /* CONFIG_BLK_DEV_CMD640_ENHANCED */
 
-static void cmd640_init_dev(ide_drive_t *drive)
+static void __init cmd640_init_dev(ide_drive_t *drive)
 {
 	unsigned int i = drive->hwif->channel * 2 + (drive->dn & 1);