| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 050/206] USB: serial: io_ti: fix I/O after disconnect | Date | Tue, 10 Jan 2017 14:35:33 +0100 |
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4.9-stable review patch. If anyone has any objections, please let me know.
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From: Johan Hovold <johan@kernel.org>
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: 26c78daade0f ("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>
--- drivers/usb/serial/io_ti.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -2593,6 +2593,9 @@ static int edge_startup(struct usb_seria 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)
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