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Jaejoong Kim cae2bc768d usb: cdc-acm: Decrement tty port's refcount if probe() fail
The cdc-acm driver does not have a refcount of itself, but uses a
tty_port's refcount. That is, if the refcount of tty_port is '0', we
can clean up the cdc-acm driver by calling the .destruct()
callback function of struct tty_port_operations.

The problem is the destruct() callback function is not called if
the probe() fails, because tty_port's refcount is not zero. So,
add tty_port_put() when probe() fails.

Signed-off-by: Jaejoong Kim <climbbb.kim@gmail.com>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-06-25 21:58:26 +08:00
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drivers usb: cdc-acm: Decrement tty port's refcount if probe() fail 2018-06-25 21:58:26 +08:00
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include USB: Report wakeup events on root-hub ports 2018-06-25 21:44:43 +08:00
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