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usb: gadget: function: acm: make f_acm pass USB20CV Chapter9

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During Halt Endpoint Test, our interrupt endpoint
will be disabled, which will clear out ep->desc
to NULL. Unless we call config_ep_by_speed() again,
we will not be able to enable this endpoint which
will make us fail that test.

Fixes: f9c56cd (usb: gadget: Clear usb_endpoint_descriptor
	inside the struct usb_ep on disable)
Cc: <stable@vger.kernel.org> # v3.4+
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi 2014-09-29 13:35:54 -05:00
parent e975be287b
commit 52ec49a5e5
1 changed files with 4 additions and 4 deletions
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8
drivers/usb/gadget/function/f_acm.c
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@ -433,12 +433,12 @@ static int acm_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
dev_vdbg(&cdev->gadget->dev,
"reset acm control interface %d\n", intf);
usb_ep_disable(acm->notify);
} else {
dev_vdbg(&cdev->gadget->dev,
"init acm ctrl interface %d\n", intf);
}
if (!acm->notify->desc)
if (config_ep_by_speed(cdev->gadget, f, acm->notify))
return -EINVAL;
}
usb_ep_enable(acm->notify);
acm->notify->driver_data = acm;