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")
Cc: stable <sta...@vger.kernel.org>
Signed-off-by: Johan Hovold <jo...@kernel.org>
---
drivers/usb/serial/io_ti.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c
index 3b1cfba0ec84..4b0b978fb356 100644
--- a/drivers/usb/serial/io_ti.c
+++ b/drivers/usb/serial/io_ti.c
@@ -2590,6 +2590,9 @@ 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)
--
2.10.2
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