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usb: dwc3: ep0: hold our lock in dwc3_gadget_ep0_set_halt

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dwc3_gadget_ep0_set_halt() will be called without
locks held in some cases, so we must hold the lock
on our own. While at that, also add a version without
locks to be called in certain conditions.

Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi
2014-09-24 10:46:46 -05:00
parent 4ac4fc9322
commit 33fb691b3e
2 changed files with 16 additions and 1 deletions
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16
drivers/usb/dwc3/ep0.c
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@@ -271,7 +271,7 @@ static void dwc3_ep0_stall_and_restart(struct dwc3 *dwc)
dwc3_ep0_out_start(dwc);
}
int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value)
int __dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value)
{
struct dwc3_ep *dep = to_dwc3_ep(ep);
struct dwc3 *dwc = dep->dwc;
@@ -281,6 +281,20 @@ int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value)
return 0;
}
int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value)
{
struct dwc3_ep *dep = to_dwc3_ep(ep);
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
int ret;
spin_lock_irqsave(&dwc->lock, flags);
ret = __dwc3_gadget_ep0_set_halt(ep, value);
spin_unlock_irqrestore(&dwc->lock, flags);
return ret;
}
void dwc3_ep0_out_start(struct dwc3 *dwc)
{
int ret;