diff options
Diffstat (limited to 'drivers/usb/gadget/at91_udc.c')
| -rw-r--r-- | drivers/usb/gadget/at91_udc.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index 043e04db2a05..df1bae9b048e 100644 --- a/drivers/usb/gadget/at91_udc.c +++ b/drivers/usb/gadget/at91_udc.c @@ -1370,6 +1370,12 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc) { struct at91_udc *udc = _udc; u32 rescans = 5; + int disable_clock = 0; + + if (!udc->clocked) { + clk_on(udc); + disable_clock = 1; + } while (rescans--) { u32 status; @@ -1458,6 +1464,9 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc) } } + if (disable_clock) + clk_off(udc); + return IRQ_HANDLED; } @@ -1656,9 +1665,7 @@ static int __init at91udc_probe(struct platform_device *pdev) if (!res) return -ENXIO; - if (!request_mem_region(res->start, - res->end - res->start + 1, - driver_name)) { + if (!request_mem_region(res->start, resource_size(res), driver_name)) { DBG("someone's using UDC memory\n"); return -EBUSY; } @@ -1699,7 +1706,7 @@ static int __init at91udc_probe(struct platform_device *pdev) udc->ep[3].maxpacket = 64; } - udc->udp_baseaddr = ioremap(res->start, res->end - res->start + 1); + udc->udp_baseaddr = ioremap(res->start, resource_size(res)); if (!udc->udp_baseaddr) { retval = -ENOMEM; goto fail0a; @@ -1781,7 +1788,7 @@ fail0a: if (cpu_is_at91rm9200()) gpio_free(udc->board.pullup_pin); fail0: - release_mem_region(res->start, res->end - res->start + 1); + release_mem_region(res->start, resource_size(res)); DBG("%s probe failed, %d\n", driver_name, retval); return retval; } @@ -1813,7 +1820,7 @@ static int __exit at91udc_remove(struct platform_device *pdev) gpio_free(udc->board.pullup_pin); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - release_mem_region(res->start, res->end - res->start + 1); + release_mem_region(res->start, resource_size(res)); clk_put(udc->iclk); clk_put(udc->fclk); |