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USB: serial: remove generic release callback

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Remove empty generic release implementation and make the release
callback non-mandatory (like attach, probe and disconnect).

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2013-03-21 12:36:43 +01:00 • committed by Greg Kroah-Hartman
parent 0f16cfe39e
commit 79b80b8a11
3 changed files with 1 additions and 8 deletions
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3
drivers/usb/serial/usb-serial.c
View file

@ -137,7 +137,7 @@ static void destroy_serial(struct kref *kref)
if (serial->minor != SERIAL_TTY_NO_MINOR)
return_serial(serial);
if (serial->attached)
if (serial->attached && serial->type->release)
serial->type->release(serial);
/* Now that nothing is using the ports, they can be freed */
@ -1305,7 +1305,6 @@ static void fixup_generic(struct usb_serial_driver *device)
set_to_generic_if_null(device, chars_in_buffer);
set_to_generic_if_null(device, read_bulk_callback);
set_to_generic_if_null(device, write_bulk_callback);
set_to_generic_if_null(device, release);
set_to_generic_if_null(device, process_read_urb);
set_to_generic_if_null(device, prepare_write_buffer);
}