From 8abaee238ebb1ef9b8bcafac7a1833f92e7f2319 Mon Sep 17 00:00:00 2001
From: Sarah Sharp <sarah.a.sharp@intel.com>
Date: Thu, 25 Oct 2007 10:58:43 -0700
Subject: [PATCH] USB: usb_serial_resume bug fix
Avoid potential null pointer dereference.
Signed-off-by: Sarah Sharp <sarah.a.sharp@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
drivers/usb/serial/usb-serial.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 426afaa0d9b..497e29a700c 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -1123,7 +1123,9 @@ int usb_serial_resume(struct usb_interface *intf)
{
struct usb_serial *serial = usb_get_intfdata(intf);
- return serial->type->resume(serial);
+ if (serial->type->resume)
+ return serial->type->resume(serial);
+ return 0;
}
EXPORT_SYMBOL(usb_serial_resume);
--
2.41.3