usb:ci_udc: don't overwrite configuration on pullup

change writel to writebits32 in ci_pullup() in order
to keep phy configuration in tact.

Signed-off-by: Ramon Fried <ramon.fried@gmail.com>

diff --git a/drivers/usb/gadget/ci_udc.c b/drivers/usb/gadget/ci_udc.c
index 8d23fab..0a84f68 100644 (file)
--- a/drivers/usb/gadget/ci_udc.c
+++ b/drivers/usb/gadget/ci_udc.c
@@ -906,7 +906,8 @@ static int ci_pullup(struct usb_gadget *gadget, int is_on)
                writel(0xffffffff, &udc->epflush);
 
                /* Turn on the USB connection by enabling the pullup resistor */
-               writel(USBCMD_ITC(MICRO_8FRAME) | USBCMD_RUN, &udc->usbcmd);
+               setbits_le32(&udc->usbcmd, USBCMD_ITC(MICRO_8FRAME) |
+                            USBCMD_RUN);
        } else {
                udc_disconnect();
        }