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usb: gadget: net2280: reset sequence number on ep enable 

Sequence number can be out of sync if endpoint is disabled after some
data transfers and enabled again. Reset it to stay in sync with host.

Tested-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Mian Yousaf Kaukab 2015-05-16 22:33:31 +02:00 committed by Felipe Balbi
parent 25d40ee818
commit e6ac4bb059
1 changed files with 4 additions and 0 deletions
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4
drivers/usb/gadget/udc/net2280.c
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@ -123,6 +123,8 @@ static char *type_string(u8 bmAttributes)
#define valid_bit cpu_to_le32(BIT(VALID_BIT))
#define dma_done_ie cpu_to_le32(BIT(DMA_DONE_INTERRUPT_ENABLE))
static void ep_clear_seqnum(struct net2280_ep *ep);
/*-------------------------------------------------------------------------*/
static inline void enable_pciirqenb(struct net2280_ep *ep)
{
@ -256,6 +258,8 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
BIT(CLEAR_NAK_OUT_PACKETS_MODE), &ep->regs->ep_rsp);
}
if (dev->quirks & PLX_SUPERSPEED)
ep_clear_seqnum(ep);
writel(tmp, &ep->cfg->ep_cfg);
/* enable irqs */