diff --git a/drivers/ata/ahci_sunxi.c b/drivers/ata/ahci_sunxi.c
index d1bf3f786b02b0c0cbca0f9265a901dc68d7c33d..0af6cb83b23e272313256427bf5a95aca0dd2e23 100644
--- a/drivers/ata/ahci_sunxi.c
+++ b/drivers/ata/ahci_sunxi.c
@@ -197,7 +197,7 @@ static int ahci_sunxi_probe(struct platform_device *pdev)
 }
 
 #ifdef CONFIG_PM_SLEEP
-int ahci_sunxi_resume(struct device *dev)
+static int ahci_sunxi_resume(struct device *dev)
 {
 	struct ata_host *host = dev_get_drvdata(dev);
 	struct ahci_host_priv *hpriv = host->private_data;