usb: gadget: pxa27x_udc: use devm_* helpers

Use devm_* helpers in the probe function to simplify the error path and
the remove path.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/gadget/udc/pxa27x_udc.c b/drivers/usb/gadget/udc/pxa27x_udc.c
index 17a0193..c7deac4 100644 (file)
--- a/drivers/usb/gadget/udc/pxa27x_udc.c
+++ b/drivers/usb/gadget/udc/pxa27x_udc.c
@@ -2438,8 +2438,9 @@ static int pxa_udc_probe(struct platform_device *pdev)
        }
 
        regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       if (!regs)
-               return -ENXIO;
+       udc->regs = devm_ioremap_resource(&pdev->dev, regs);
+       if (IS_ERR(udc->regs))
+               return PTR_ERR(udc->regs);
        udc->irq = platform_get_irq(pdev, 0);
        if (udc->irq < 0)
                return udc->irq;
@@ -2455,21 +2456,13 @@ static int pxa_udc_probe(struct platform_device *pdev)
        if (udc->gpiod)
                gpiod_direction_output(udc->gpiod, 0);
 
-       udc->clk = clk_get(&pdev->dev, NULL);
-       if (IS_ERR(udc->clk)) {
-               retval = PTR_ERR(udc->clk);
-               goto err_clk;
-       }
+       udc->clk = devm_clk_get(&pdev->dev, NULL);
+       if (IS_ERR(udc->clk))
+               return PTR_ERR(udc->clk);
+
        retval = clk_prepare(udc->clk);
        if (retval)
-               goto err_clk_prepare;
-
-       retval = -ENOMEM;
-       udc->regs = ioremap(regs->start, resource_size(regs));
-       if (!udc->regs) {
-               dev_err(&pdev->dev, "Unable to map UDC I/O memory\n");
-               goto err_map;
-       }
+               return retval;
 
        udc->vbus_sensed = 0;
 
@@ -2479,32 +2472,23 @@ static int pxa_udc_probe(struct platform_device *pdev)
        pxa_eps_setup(udc);
 
        /* irq setup after old hardware state is cleaned up */
-       retval = request_irq(udc->irq, pxa_udc_irq,
-                       IRQF_SHARED, driver_name, udc);
+       retval = devm_request_irq(&pdev->dev, udc->irq, pxa_udc_irq,
+                                 IRQF_SHARED, driver_name, udc);
        if (retval != 0) {
                dev_err(udc->dev, "%s: can't get irq %i, err %d\n",
                        driver_name, udc->irq, retval);
-               goto err_irq;
+               goto err;
        }
 
        retval = usb_add_gadget_udc(&pdev->dev, &udc->gadget);
        if (retval)
-               goto err_add_udc;
+               goto err;
 
        pxa_init_debugfs(udc);
 
        return 0;
-
-err_add_udc:
-       free_irq(udc->irq, udc);
-err_irq:
-       iounmap(udc->regs);
-err_map:
+err:
        clk_unprepare(udc->clk);
-err_clk_prepare:
-       clk_put(udc->clk);
-       udc->clk = NULL;
-err_clk:
        return retval;
 }
 
@@ -2518,7 +2502,6 @@ static int pxa_udc_remove(struct platform_device *_dev)
 
        usb_del_gadget_udc(&udc->gadget);
        usb_gadget_unregister_driver(udc->driver);
-       free_irq(udc->irq, udc);
        pxa_cleanup_debugfs(udc);
 
        usb_put_phy(udc->transceiver);
@@ -2526,8 +2509,6 @@ static int pxa_udc_remove(struct platform_device *_dev)
        udc->transceiver = NULL;
        the_controller = NULL;
        clk_unprepare(udc->clk);
-       clk_put(udc->clk);
-       iounmap(udc->regs);
 
        return 0;
 }