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path: root/drivers/usb
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Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/gadget/fsl_qe_udc.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/usb/gadget/fsl_qe_udc.c b/drivers/usb/gadget/fsl_qe_udc.c
index d6c5bcd4006..e8f7862acb3 100644
--- a/drivers/usb/gadget/fsl_qe_udc.c
+++ b/drivers/usb/gadget/fsl_qe_udc.c
@@ -2604,6 +2604,10 @@ static int __devinit qe_udc_probe(struct of_device *ofdev,
(unsigned long)udc_controller);
/* request irq and disable DR */
udc_controller->usb_irq = irq_of_parse_and_map(np, 0);
+ if (!udc_controller->usb_irq) {
+ ret = -EINVAL;
+ goto err_noirq;
+ }
ret = request_irq(udc_controller->usb_irq, qe_udc_irq, 0,
driver_name, udc_controller);
@@ -2625,6 +2629,8 @@ static int __devinit qe_udc_probe(struct of_device *ofdev,
err6:
free_irq(udc_controller->usb_irq, udc_controller);
err5:
+ irq_dispose_mapping(udc_controller->usb_irq);
+err_noirq:
if (udc_controller->nullmap) {
dma_unmap_single(udc_controller->gadget.dev.parent,
udc_controller->nullp, 256,
@@ -2648,7 +2654,7 @@ err2:
iounmap(udc_controller->usb_regs);
err1:
kfree(udc_controller);
-
+ udc_controller = NULL;
return ret;
}
@@ -2710,6 +2716,7 @@ static int __devexit qe_udc_remove(struct of_device *ofdev)
kfree(ep->txframe);
free_irq(udc_controller->usb_irq, udc_controller);
+ irq_dispose_mapping(udc_controller->usb_irq);
tasklet_kill(&udc_controller->rx_tasklet);