From: Felipe Balbi <balbi@ti.com>
Date: Mon, 29 Sep 2014 19:23:41 +0000 (-0500)
Subject: usb: gadget: function: uac2: prevent double ep disable
X-Git-Tag: v3.18-rc3~9^2~2^2~22
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=f3bb7b298120df8a9b7354e4f6d07e3185c15db7;p=karo-tx-linux.git

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 fa511180c241..1146f4d5f66d 100644
--- 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++) {