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Commit 1dcaa252 authored by Yunfan Zhang's avatar Yunfan Zhang Committed by Felipe Balbi
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usb: gadget: mv_udc: fix hang when shutdown 



Fix system hang in udc shutdown routine which caused by accessing usb
register when clock is disabled. So enable usb clock before access
register.

Signed-off-by: default avatarYunfan Zhang <yfzhang@marvell.com>
Signed-off-by: default avatarNeil Zhang <zhangwm@marvell.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 60326ce3

drivers/usb/gadget/mv_udc_core.c

+2 −0
Original line number Diff line number Diff line
@@ -2501,9 +2501,11 @@ static void mv_udc_shutdown(struct platform_device *dev) 
	u32 mode;



	/* reset controller mode to IDLE */

	mv_udc_enable(udc);

	mode = readl(&udc->op_regs->usbmode);

	mode &= ~3;

	writel(mode, &udc->op_regs->usbmode);

	mv_udc_disable(udc);

}



static struct platform_driver udc_driver = {