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Subjectusb_serial_suspend(): buggy(?) code
Commit ec22559e0b7a05283a3413bda5d177e42c950e23 added the following 
function to drivers/usb/serial/usb-serial.c:

<-- snip -->

...
int usb_serial_suspend(struct usb_interface *intf, pm_message_t message)
{
struct usb_serial *serial = usb_get_intfdata(intf);
struct usb_serial_port *port;
int i, r = 0;

if (serial) {
for (i = 0; i < serial->num_ports; ++i) {
port = serial->port[i];
if (port)
kill_traffic(port);
}
}

if (serial->type->suspend)
serial->type->suspend(serial, message);

return r;
}
...

<-- snip -->

The Coverity checker spotted the inconsequent NULL checking for "serial".

Looking at the code it also doesn't seem to have been intended to always
return 0.

cu
Adrian

--

"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed

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