From: Zqiang <qiang.zhang@windriver.com>
Date: Thu, 10 Dec 2020 02:01:48 +0000 (+0800)
Subject: usb: gadget: function: printer: Fix a memory leak for interface descriptor
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=2cc332e4ee4febcbb685e2962ad323fe4b3b750a;p=linux.git

usb: gadget: function: printer: Fix a memory leak for interface descriptor

When printer driver is loaded, the printer_func_bind function is called, in
this function, the interface descriptor be allocated memory, if after that,
the error occurred, the interface descriptor memory need to be free.

Reviewed-by: Peter Chen <peter.chen@nxp.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Zqiang <qiang.zhang@windriver.com>
Link: https://lore.kernel.org/r/20201210020148.6691-1-qiang.zhang@windriver.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/gadget/function/f_printer.c b/drivers/usb/gadget/function/f_printer.c
index 64a4112068fc8..2f1eb2e81d306 100644
--- a/drivers/usb/gadget/function/f_printer.c
+++ b/drivers/usb/gadget/function/f_printer.c
@@ -1162,6 +1162,7 @@ fail_tx_reqs:
 		printer_req_free(dev->in_ep, req);
 	}
 
+	usb_free_all_descriptors(f);
 	return ret;
 
 }