commit f3bb7b298120df8a9b7354e4f6d07e3185c15db7
author Felipe Balbi <balbi@ti.com> Mon Sep 29 14:23:41 2014 -0500
committer Felipe Balbi <balbi@ti.com> Mon Oct 20 15:58:49 2014 -0500
tree 8cbaff1c898ebe1e18a9987fba575e1baeb81b28
parent 703a303c187ef7e3c8daf8a1be343576c9579eaf

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>

drivers/usb/gadget/function/f_uac2.c

diff --git a/drivers/usb/gadget/function/f_uac2.c b/drivers/usb/gadget/function/f_uac2.c
index fa51118..1146f4d 100644
--- a/drivers/usb/gadget/function/f_uac2.c
+++ b/drivers/usb/gadget/function/f_uac2.c
@@ -951,6 +951,9 @@
 	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++) {