Am Montag 23 Juli 2007 schrieb Adrian Bunk:
> Commit ec22559e0b7a05283a3413bda5d177e42c950e23 added the following
> function to drivers/usb/serial/usb-serial.c:
>
[..]
>
> 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.
Coverity is right. The check for NULL is wrongly done and the error
return is lost.
Regards
Oliver
Signed-off-by: Oliver Neukum <[email protected]>
--
--- a/drivers/usb/serial/usb-serial.c 2007-07-23 08:47:35.000000000 +0200
+++ b/drivers/usb/serial/usb-serial.c 2007-07-23 08:49:20.000000000 +0200
@@ -1077,16 +1077,17 @@ int usb_serial_suspend(struct usb_interf
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) /* device has been disconnected */
+ return 0;
+
+ 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);
+ r = serial->type->suspend(serial, message);
return r;
}
-
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