USB ehci mxc: prepare/unprepare clock

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

drivers/usb/host/ehci-mxc.c

@@ -171,7 +171,7 @@ static int ehci_mxc_drv_probe(struct platform_device *pdev)
 		ret = PTR_ERR(priv->usbclk);
 		goto err_clk;
 	}
-	clk_enable(priv->usbclk);
+	clk_prepare_enable(priv->usbclk);
 
 	if (!cpu_is_mx35() && !cpu_is_mx25()) {
 		priv->ahbclk = clk_get(dev, "usb_ahb");
@@ -179,7 +179,7 @@ static int ehci_mxc_drv_probe(struct platform_device *pdev)
 			ret = PTR_ERR(priv->ahbclk);
 			goto err_clk_ahb;
 		}
-		clk_enable(priv->ahbclk);
+		clk_prepare_enable(priv->ahbclk);
 	}
 
 	/* "dr" device has its own clock on i.MX51 */
@@ -189,7 +189,7 @@ static int ehci_mxc_drv_probe(struct platform_device *pdev)
 			ret = PTR_ERR(priv->phy1clk);
 			goto err_clk_phy;
 		}
-		clk_enable(priv->phy1clk);
+		clk_prepare_enable(priv->phy1clk);
 	}
 
 
@@ -266,16 +266,16 @@ static int ehci_mxc_drv_probe(struct platform_device *pdev)
 		pdata->exit(pdev);
 err_init:
 	if (priv->phy1clk) {
-		clk_disable(priv->phy1clk);
+		clk_disable_unprepare(priv->phy1clk);
 		clk_put(priv->phy1clk);
 	}
 err_clk_phy:
 	if (priv->ahbclk) {
-		clk_disable(priv->ahbclk);
+		clk_disable_unprepare(priv->ahbclk);
 		clk_put(priv->ahbclk);
 	}
 err_clk_ahb:
-	clk_disable(priv->usbclk);
+	clk_disable_unprepare(priv->usbclk);
 	clk_put(priv->usbclk);
 err_clk:
 	iounmap(hcd->regs);
@@ -307,14 +307,14 @@ static int __exit ehci_mxc_drv_remove(struct platform_device *pdev)
 	usb_put_hcd(hcd);
 	platform_set_drvdata(pdev, NULL);
 
-	clk_disable(priv->usbclk);
+	clk_disable_unprepare(priv->usbclk);
 	clk_put(priv->usbclk);
 	if (priv->ahbclk) {
-		clk_disable(priv->ahbclk);
+		clk_disable_unprepare(priv->ahbclk);
 		clk_put(priv->ahbclk);
 	}
 	if (priv->phy1clk) {
-		clk_disable(priv->phy1clk);
+		clk_disable_unprepare(priv->phy1clk);
 		clk_put(priv->phy1clk);
 	}