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USB: serial: io_ti: fix I/O after disconnect

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commit 2330d0a853da260d8a9834a70df448032b9ff623 upstream.

Cancel the heartbeat work on driver unbind in order to avoid I/O after
disconnect in case the port is held open.

Note that the cancel in release() is still needed to stop the heartbeat
after late probe errors.

Fixes: 26c78daade ("USB: io_ti: Add heartbeat to keep idle EP/416 ports from disconnecting")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2017-01-03 16:39:45 +01:00 • committed by Greg Kroah-Hartman
parent 7ef8807cce
commit 11743d704e
1 changed files with 3 additions and 0 deletions
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3
drivers/usb/serial/io_ti.c
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@ -2593,6 +2593,9 @@ static int edge_startup(struct usb_serial *serial)
static void edge_disconnect(struct usb_serial *serial)
{
struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
cancel_delayed_work_sync(&edge_serial->heartbeat_work);
}
static void edge_release(struct usb_serial *serial)