Commit 1ed274d0 authored Sep 23, 2016 by Mayank Rana

usb: gadget: f_cdev: Avoid potential NULL pointer dereference



Fix possible NULL pointer dereference issue as strrchr() API can
return NULL if there is no port_num found as part of passed string.

Change-Id: I410e58361282f175e46b68cbfaf4824e386454f8
Signed-off-by: Mayank Rana <mrana@codeaurora.org>

parent 9e2d528d

drivers/usb/gadget/function/f_cdev.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -1770,6 +1770,10 @@ static int cser_set_inst_name(struct usb_function_instance f, const char name)

		/* get port number */
		str = strrchr(name, '.');
		if (!str) {
		pr_err("err: port number not found\n");
		return -EINVAL;
		}
		pr_debug("str:%s\n", str);

		*str = '\0';