dect
/
linux-2.6
Archived
13
0
Fork 0
Code Releases Activity

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: Yunfan Zhang <yfzhang@marvell.com>
Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Yunfan Zhang 2012-07-10 10:07:06 +08:00 committed by Felipe Balbi
parent 60326ce377
commit 1dcaa252fd
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/usb/gadget/mv_udc_core.c
View File

@ -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 = {