USB: at91: fix clk_get error handling

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Cc: linux-usb@vger.kernel.org

diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
index 5df0b0e..dc33517 100644 (file)
--- a/drivers/usb/host/ohci-at91.c
+++ b/drivers/usb/host/ohci-at91.c
@@ -139,8 +139,23 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver,
        }
 
        iclk = clk_get(&pdev->dev, "ohci_clk");
+       if (IS_ERR(iclk)) {
+               dev_err(&pdev->dev, "failed to get ohci_clk\n");
+               retval = PTR_ERR(iclk);
+               goto err3;
+       }
        fclk = clk_get(&pdev->dev, "uhpck");
+       if (IS_ERR(fclk)) {
+               dev_err(&pdev->dev, "failed to get uhpck\n");
+               retval = PTR_ERR(fclk);
+               goto err4;
+       }
        hclk = clk_get(&pdev->dev, "hclk");
+       if (IS_ERR(hclk)) {
+               dev_err(&pdev->dev, "failed to get hclk\n");
+               retval = PTR_ERR(hclk);
+               goto err5;
+       }
 
        at91_start_hc(pdev);
        ohci_hcd_init(hcd_to_ohci(hcd));
@@ -153,9 +168,12 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver,
        at91_stop_hc(pdev);
 
        clk_put(hclk);
+ err5:
        clk_put(fclk);
+ err4:
        clk_put(iclk);
 
+ err3:
        iounmap(hcd->regs);
 
  err2: