usb: gadget: at91_udc: prepare clk before calling enable

Replace clk_enable/disable with clk_prepare_enable/disable_unprepare to
avoid common clk framework warnings.

Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index 2cbab1c9ff5867c90e6516f46971f7d7aa5aa37e..d9a6add0c8526e06778addb733ce3e53da78a291 100644 (file)
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -870,8 +870,8 @@ static void clk_on(struct at91_udc *udc)
        if (udc->clocked)
                return;
        udc->clocked = 1;
-       clk_enable(udc->iclk);
-       clk_enable(udc->fclk);
+       clk_prepare_enable(udc->iclk);
+       clk_prepare_enable(udc->fclk);
 }
 
 static void clk_off(struct at91_udc *udc)
@@ -880,8 +880,8 @@ static void clk_off(struct at91_udc *udc)
                return;
        udc->clocked = 0;
        udc->gadget.speed = USB_SPEED_UNKNOWN;
-       clk_disable(udc->fclk);
-       clk_disable(udc->iclk);
+       clk_disable_unprepare(udc->fclk);
+       clk_disable_unprepare(udc->iclk);
 }
 
 /*
@@ -1782,12 +1782,14 @@ static int at91udc_probe(struct platform_device *pdev)
        }
 
        /* don't do anything until we have both gadget driver and VBUS */
-       clk_enable(udc->iclk);
+       retval = clk_prepare_enable(udc->iclk);
+       if (retval)
+               goto fail1;
        at91_udp_write(udc, AT91_UDP_TXVC, AT91_UDP_TXVC_TXVDIS);
        at91_udp_write(udc, AT91_UDP_IDR, 0xffffffff);
        /* Clear all pending interrupts - UDP may be used by bootloader. */
        at91_udp_write(udc, AT91_UDP_ICR, 0xffffffff);
-       clk_disable(udc->iclk);
+       clk_disable_unprepare(udc->iclk);
 
        /* request UDC and maybe VBUS irqs */
        udc->udp_irq = platform_get_irq(pdev, 0);