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| author | Johan Hovold <johan@kernel.org> | 2021-01-21 11:29:14 +0100 |
|---|---|---|
| committer | Johan Hovold <johan@kernel.org> | 2021-01-26 16:16:40 +0100 |
| commit | 54c98d9d7ba48c66d64f72e3d5a7586601705611 (patch) | |
| tree | 618bd109401a3fd53882bd4707cbc62f6a4a73ca /drivers/usb/serial/xr_serial.c | |
| parent | a38d21488097f9823ebd297d56b24f431ee7acaa (diff) | |
| download | linux-stable-54c98d9d7ba48c66d64f72e3d5a7586601705611.tar.gz linux-stable-54c98d9d7ba48c66d64f72e3d5a7586601705611.tar.bz2 linux-stable-54c98d9d7ba48c66d64f72e3d5a7586601705611.zip | |
USB: serial: xr: fix interface leak at disconnect
Make sure to release the control interface at disconnect so that the
driver can be unbound without leaking resources (and later rebound).
Fixes: c2d405aa86b4 ("USB: serial: add MaxLinear/Exar USB to Serial driver")
Signed-off-by: Johan Hovold <johan@kernel.org>
Diffstat (limited to 'drivers/usb/serial/xr_serial.c')
| -rw-r--r-- | drivers/usb/serial/xr_serial.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/usb/serial/xr_serial.c b/drivers/usb/serial/xr_serial.c index 7be6da6a5cf3..5e110b0c8e71 100644 --- a/drivers/usb/serial/xr_serial.c +++ b/drivers/usb/serial/xr_serial.c @@ -564,6 +564,15 @@ static int xr_probe(struct usb_serial *serial, const struct usb_device_id *id) return 0; } +static void xr_disconnect(struct usb_serial *serial) +{ + struct usb_driver *driver = serial->type->usb_driver; + struct usb_interface *control_interface; + + control_interface = usb_ifnum_to_if(serial->dev, 0); + usb_driver_release_interface(driver, control_interface); +} + static const struct usb_device_id id_table[] = { { USB_DEVICE(0x04e2, 0x1410) }, /* XR21V141X */ { } @@ -578,6 +587,7 @@ static struct usb_serial_driver xr_device = { .id_table = id_table, .num_ports = 1, .probe = xr_probe, + .disconnect = xr_disconnect, .open = xr_open, .close = xr_close, .break_ctl = xr_break_ctl, |