diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/gadget/mv_udc_core.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c index cd4de00a3ff5..84655289aea9 100644 --- a/drivers/usb/gadget/mv_udc_core.c +++ b/drivers/usb/gadget/mv_udc_core.c @@ -2037,6 +2037,13 @@ static int __devinit mv_udc_probe(struct platform_device *dev) & CAPLENGTH_MASK)); udc->max_eps = readl(&udc->cap_regs->dccparams) & DCCPARAMS_DEN_MASK; + /* + * some platform will use usb to download image, it may not disconnect + * usb gadget before loading kernel. So first stop udc here. + */ + udc_stop(udc); + writel(0xFFFFFFFF, &udc->op_regs->usbsts); + size = udc->max_eps * sizeof(struct mv_dqh) *2; size = (size + DQH_ALIGNMENT - 1) & ~(DQH_ALIGNMENT - 1); udc->ep_dqh = dma_alloc_coherent(&dev->dev, size, |