[PATCH 4.14 44/57] usb: gadget: function: printer: Fix a memory leak for interface descriptor

Greg Kroah-Hartman
2021-01-11T13:59:51Z

From: Zqiang <qiang.zhang@windriver.com>

commit 2cc332e4ee4febcbb685e2962ad323fe4b3b750a upstream.

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>

---
drivers/usb/gadget/function/f_printer.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/usb/gadget/function/f_printer.c
+++ b/drivers/usb/gadget/function/f_printer.c
@@ -1130,6 +1130,7 @@ fail_tx_reqs:
printer_req_free(dev->in_ep, req);
}

+ usb_free_all_descriptors(f);
return ret;

}