USB: omap_udc: use devm_request_irq()

The current code fails to release the third irq on the error path
(observed by reading the code), and we get also multiple WARNs with
failing gadget drivers due to duplicate IRQ releases. Fix by using
devm_request_irq().

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

diff --git a/drivers/usb/gadget/udc/omap_udc.c b/drivers/usb/gadget/udc/omap_udc.c
index 3a16431da3211c470db38e5e2980996142073b65..1c77218c82af857ad509617b8eaf4ed628c5981e 100644 (file)
--- a/drivers/usb/gadget/udc/omap_udc.c
+++ b/drivers/usb/gadget/udc/omap_udc.c
@@ -2867,8 +2867,8 @@ bad_on_1710:
                udc->clr_halt = UDC_RESET_EP;
 
        /* USB general purpose IRQ:  ep0, state changes, dma, etc */
-       status = request_irq(pdev->resource[1].start, omap_udc_irq,
-                       0, driver_name, udc);
+       status = devm_request_irq(&pdev->dev, pdev->resource[1].start,
+                                 omap_udc_irq, 0, driver_name, udc);
        if (status != 0) {
                ERR("can't get irq %d, err %d\n",
                        (int) pdev->resource[1].start, status);
@@ -2876,20 +2876,20 @@ bad_on_1710:
        }
 
        /* USB "non-iso" IRQ (PIO for all but ep0) */
-       status = request_irq(pdev->resource[2].start, omap_udc_pio_irq,
-                       0, "omap_udc pio", udc);
+       status = devm_request_irq(&pdev->dev, pdev->resource[2].start,
+                                 omap_udc_pio_irq, 0, "omap_udc pio", udc);
        if (status != 0) {
                ERR("can't get irq %d, err %d\n",
                        (int) pdev->resource[2].start, status);
-               goto cleanup2;
+               goto cleanup1;
        }
 #ifdef USE_ISO
-       status = request_irq(pdev->resource[3].start, omap_udc_iso_irq,
-                       0, "omap_udc iso", udc);
+       status = devm_request_irq(&pdev->dev, pdev->resource[3].start,
+                                 omap_udc_iso_irq, 0, "omap_udc iso", udc);
        if (status != 0) {
                ERR("can't get irq %d, err %d\n",
                        (int) pdev->resource[3].start, status);
-               goto cleanup3;
+               goto cleanup1;
        }
 #endif
        if (cpu_is_omap16xx() || cpu_is_omap7xx()) {
@@ -2902,22 +2902,11 @@ bad_on_1710:
        create_proc_file();
        status = usb_add_gadget_udc_release(&pdev->dev, &udc->gadget,
                        omap_udc_release);
-       if (status)
-               goto cleanup4;
-
-       return 0;
+       if (!status)
+               return 0;
 
-cleanup4:
        remove_proc_file();
 
-#ifdef USE_ISO
-cleanup3:
-       free_irq(pdev->resource[2].start, udc);
-#endif
-
-cleanup2:
-       free_irq(pdev->resource[1].start, udc);
-
 cleanup1:
        kfree(udc);
        udc = NULL;
@@ -2961,12 +2950,6 @@ static int omap_udc_remove(struct platform_device *pdev)
 
        remove_proc_file();
 
-#ifdef USE_ISO
-       free_irq(pdev->resource[3].start, udc);
-#endif
-       free_irq(pdev->resource[2].start, udc);
-       free_irq(pdev->resource[1].start, udc);
-
        if (udc->dc_clk) {
                if (udc->clk_requested)
                        omap_udc_enable_clock(0);