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USB: usb_serial_resume bug fix
author
Sarah Sharp
<sarah.a.sharp@intel.com>
Thu, 25 Oct 2007 17:58:43 +0000
(10:58 -0700)
committer
Greg Kroah-Hartman
<gregkh@suse.de>
Thu, 25 Oct 2007 19:18:45 +0000
(12:18 -0700)
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
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diff --git
a/drivers/usb/serial/usb-serial.c
b/drivers/usb/serial/usb-serial.c
index 426afaa0d9b8b13429b38b358772cdbfdd556c9f..497e29a700ca8dccb20049e0aa0abf983dcbf40c 100644
(file)
--- 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);
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