From 8abaee238ebb1ef9b8bcafac7a1833f92e7f2319 Mon Sep 17 00:00:00 2001 From: Sarah Sharp 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 Signed-off-by: Greg Kroah-Hartman --- 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 426afaa0d9b8..497e29a700ca 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); -- 2.30.2