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Commit 070c0b17 authored by Alexey Khoroshilov's avatar Alexey Khoroshilov Committed by Greg Kroah-Hartman
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USB: cdc-acm: fix double usb_autopm_put_interface() in acm_port_activate()


If acm_submit_read_urbs() fails in acm_port_activate(), error handling
code calls usb_autopm_put_interface() while it is already called
before acm_submit_read_urbs(). The patch reorganizes error handling code
to avoid double decrement of USB interface's PM-usage counter.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: default avatarAlexey Khoroshilov <khoroshilov@ispras.ru>
Acked-by: default avatarOliver Neukum <oliver@neukum.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f9076e28
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