diff options
| author | Oliver Neukum <oneukum@suse.de> | 2007-07-23 06:58:39 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-07-30 20:27:45 (GMT) |
| commit | e31c18804f584dd838a752f6628e8c15bd7a3372 (patch) | |
| tree | abead87733ffe5e3da890058d523851e849794f1 /drivers/usb/serial/usb-serial.c | |
| parent | 209b3cfd538e7d56d228cf6daf0b27e2cc26c6c2 (diff) | |
| download | linux-fsl-qoriq-e31c18804f584dd838a752f6628e8c15bd7a3372.tar.xz | |
USB: fix usb_serial_suspend(): buggy code
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.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/serial/usb-serial.c')
| -rw-r--r-- | drivers/usb/serial/usb-serial.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index a366565..5e1cf78 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -1077,16 +1077,17 @@ int usb_serial_suspend(struct usb_interface *intf, pm_message_t message) 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; } |