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usb: use usb_serial_put in usb_serial_probe errors

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commit 0658a3366d upstream.

The use of kfree(serial) in error cases of usb_serial_probe
was invalid - usb_serial structure allocated in create_serial()
gets reference of usb_device that needs to be put, so we need
to use usb_serial_put() instead of simple kfree().

Signed-off-by: Jan Safrata <jan.nikitenko@gmail.com>
Acked-by: Johan Hovold <jhovold@gmail.com>
Cc: Richard Retanubun <richardretanubun@ruggedcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jan Safrata 2012-05-22 14:04:50 +02:00 committed by Greg Kroah-Hartman
parent a39bdce2f2
commit 9dbd3418ff
1 changed files with 3 additions and 3 deletions
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6
drivers/usb/serial/usb-serial.c
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@ -768,7 +768,7 @@ int usb_serial_probe(struct usb_interface *interface,
if (retval) {
dbg("sub driver rejected device");
kfree(serial);
usb_serial_put(serial);
module_put(type->driver.owner);
return retval;
}
@ -840,7 +840,7 @@ int usb_serial_probe(struct usb_interface *interface,
*/
if (num_bulk_in == 0 || num_bulk_out == 0) {
dev_info(&interface->dev, "PL-2303 hack: descriptors matched but endpoints did not\n");
kfree(serial);
usb_serial_put(serial);
module_put(type->driver.owner);
return -ENODEV;
}
@ -854,7 +854,7 @@ int usb_serial_probe(struct usb_interface *interface,
if (num_ports == 0) {
dev_err(&interface->dev,
"Generic device with no bulk out, not allowed.\n");
kfree(serial);
usb_serial_put(serial);
module_put(type->driver.owner);
return -EIO;
}