Clean up bus probe error handling by separating success and error paths.
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
---
This one applies on top of the three usb-serial bus probe fixes I just
posted.
drivers/usb/serial/bus.c | 25 ++++++++++++++-----------
1 file changed, 14 insertions(+), 11 deletions(-)
diff --git a/drivers/usb/serial/bus.c b/drivers/usb/serial/bus.c
index b53a28692226..8936a83c96cd 100644
--- a/drivers/usb/serial/bus.c
+++ b/drivers/usb/serial/bus.c
@@ -47,39 +47,42 @@ static int usb_serial_device_probe(struct device *dev)
int minor;
port = to_usb_serial_port(dev);
- if (!port) {
- retval = -ENODEV;
- goto exit;
- }
+ if (!port)
+ return -ENODEV;
/* make sure suspend/resume doesn't race against port_probe */
retval = usb_autopm_get_interface(port->serial->interface);
if (retval)
- goto exit;
+ return retval;
driver = port->serial->type;
if (driver->port_probe) {
retval = driver->port_probe(port);
if (retval)
- goto exit_with_autopm;
+ goto err_autopm_put;
}
minor = port->minor;
tty_dev = tty_register_device(usb_serial_tty_driver, minor, dev);
if (IS_ERR(tty_dev)) {
retval = PTR_ERR(tty_dev);
- if (driver->port_remove)
- driver->port_remove(port);
- goto exit_with_autopm;
+ goto err_port_remove;
}
+ usb_autopm_put_interface(port->serial->interface);
+
dev_info(&port->serial->dev->dev,
"%s converter now attached to ttyUSB%d\n",
driver->description, minor);
-exit_with_autopm:
+ return 0;
+
+err_port_remove:
+ if (driver->port_remove)
+ driver->port_remove(port);
+err_autopm_put:
usb_autopm_put_interface(port->serial->interface);
-exit:
+
return retval;
}
--
2.0.5
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