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>
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@ -1123,7 +1123,9 @@ int usb_serial_resume(struct usb_interface *intf)
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{
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{
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struct usb_serial *serial = usb_get_intfdata(intf);
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struct usb_serial *serial = usb_get_intfdata(intf);
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return serial->type->resume(serial);
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if (serial->type->resume)
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return serial->type->resume(serial);
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return 0;
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}
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}
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EXPORT_SYMBOL(usb_serial_resume);
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EXPORT_SYMBOL(usb_serial_resume);
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