usb: gadget: function: uac2: prevent double ep disable

without this check, f_uac2 would try to disable
the same endpoint twice. Fix that.

Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/gadget/function/f_uac2.c b/drivers/usb/gadget/function/f_uac2.c
index fa51118..1146f4d 100644 (file)
--- a/drivers/usb/gadget/function/f_uac2.c
+++ b/drivers/usb/gadget/function/f_uac2.c
@@ -951,6 +951,9 @@ free_ep(struct uac2_rtd_params *prm, struct usb_ep *ep)
        struct snd_uac2_chip *uac2 = prm->uac2;
        int i;
 
+       if (!prm->ep_enabled)
+               return;
+
        prm->ep_enabled = false;
 
        for (i = 0; i < USB_XFERS; i++) {