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usb: dwc2: gadget: sparse warning of context imbalance

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sparse was giving the following warning:
        warning: context imbalance in 's3c_hsotg_ep_enable'
	                - different lock contexts for basic block

we were returning ENOMEM while still holding the spinlock.
The sparse warning was fixed by releasing the spinlock before return.

Cc: <stable@vger.kernel.org> # v3.17
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Sudip Mukherjee 2014-10-17 10:14:02 +05:30 committed by Felipe Balbi
parent bfa6b18c68
commit b585a48b8a
1 changed files with 5 additions and 2 deletions
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7
drivers/usb/dwc2/gadget.c
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@ -2561,8 +2561,10 @@ static int s3c_hsotg_ep_enable(struct usb_ep *ep,
hs_ep->fifo_size = val;
break;
}
if (i == 8)
return -ENOMEM;
if (i == 8) {
ret = -ENOMEM;
goto error;
}
}
/* for non control endpoints, set PID to D0 */
@ -2579,6 +2581,7 @@ static int s3c_hsotg_ep_enable(struct usb_ep *ep,
/* enable the endpoint interrupt */
s3c_hsotg_ctrl_epint(hsotg, index, dir_in, 1);
error:
spin_unlock_irqrestore(&hsotg->lock, flags);
return ret;
}