drivers/usb/host/ehci-msm.c: use devm_ functions

The various devm_ functions allocate memory that is released when a driver
detaches.  This patch uses these functions for data that is allocated in
the probe function of a platform device and is only freed in the remove
function.

The original code was also missing a call to iounmap(hcd->regs); in the
remove function, so this patch also implicitly fixes a bug.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 4 insertions, 9 deletions

diff --git a/drivers/usb/host/ehci-msm.c b/drivers/usb/host/ehci-msm.c
index 17dd9e94001e..4af4dc5b618c 100644
--- a/drivers/usb/host/ehci-msm.c
+++ b/drivers/usb/host/ehci-msm.c
@@ -133,7 +133,7 @@ static int ehci_msm_probe(struct platform_device *pdev)
 
         hcd->rsrc_start = res->start;
         hcd->rsrc_len = resource_size(res);
-        hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+        hcd->regs = devm_ioremap(&pdev->dev, hcd->rsrc_start, hcd->rsrc_len);
         if (!hcd->regs) {
                 dev_err(&pdev->dev, "ioremap failed\n");
                 ret = -ENOMEM;
@@ -145,17 +145,17 @@ static int ehci_msm_probe(struct platform_device *pdev)
          * powering up VBUS, mapping of registers address space and power
          * management.
          */
-        phy = usb_get_phy(USB_PHY_TYPE_USB2);
+        phy = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2);
         if (IS_ERR_OR_NULL(phy)) {
                 dev_err(&pdev->dev, "unable to find transceiver\n");
                 ret = -ENODEV;
-                goto unmap;
+                goto put_hcd;
         }
 
         ret = otg_set_host(phy->otg, &hcd->self);
         if (ret < 0) {
                 dev_err(&pdev->dev, "unable to register with transceiver\n");
-                goto put_transceiver;
+                goto put_hcd;
         }
 
         device_init_wakeup(&pdev->dev, 1);
@@ -168,10 +168,6 @@ static int ehci_msm_probe(struct platform_device *pdev)
 
         return 0;
 
-put_transceiver:
-        usb_put_phy(phy);
-unmap:
-        iounmap(hcd->regs);
 put_hcd:
         usb_put_hcd(hcd);
 
@@ -187,7 +183,6 @@ static int __devexit ehci_msm_remove(struct platform_device *pdev)
         pm_runtime_set_suspended(&pdev->dev);
 
         otg_set_host(phy->otg, NULL);
-        usb_put_phy(phy);
 
         usb_put_hcd(hcd);