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authorJohan Hovold <jhovold@gmail.com>2014-05-26 19:23:33 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-06-30 20:11:58 -0700
commitf95809545bc634388a3e82c2a9088fe931feccf4 (patch)
treeec1824abbf612413b6bd4e8df8fb51a606536bd1 /kernel
parentb9b8bcc97d19a3175e715474c770b3521764c6c9 (diff)
USB: serial: fix potential runtime pm imbalance at device remove
commit c14829fad88dbeda57253590695b85ba51270621 upstream. Only call usb_autopm_put_interface() if the corresponding usb_autopm_get_interface() was successful. This prevents a potential runtime PM counter imbalance should usb_autopm_get_interface() fail. Note that the USB PM usage counter is reset when the interface is unbound, but that the runtime PM counter may be left unbalanced. Also add comment on why we don't need to worry about racing resume/suspend on autopm_get failures. Fixes: d5fd650cfc7f ("usb: serial: prevent suspend/resume from racing against probe/remove") Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions