diff options
| author | Johan Hovold <jhovold@gmail.com> | 2014-05-26 19:23:44 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-05-28 00:04:09 +0200 |
| commit | e4c36076c2a6195ec62c35b03c3fde84d0087dc8 (patch) | |
| tree | b54f08f5d9173f475d8421753b756b91a858b32a /drivers/usb/class/cdc-acm.c | |
| parent | USB: cdc-acm: fix failed open not being detected (diff) | |
| download | linux-e4c36076c2a6195ec62c35b03c3fde84d0087dc8.tar.xz linux-e4c36076c2a6195ec62c35b03c3fde84d0087dc8.zip | |
USB: cdc-acm: fix I/O after failed open
Make sure to kill any already submitted read urbs on read-urb submission
failures in open in order to prevent doing I/O for a closed port.
Fixes: 088c64f81284 ("USB: cdc-acm: re-write read processing")
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 6c6928a154bd..eddeba61a88c 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -506,6 +506,7 @@ static int acm_port_activate(struct tty_port *port, struct tty_struct *tty) { struct acm *acm = container_of(port, struct acm, port); int retval = -ENODEV; + int i; dev_dbg(&acm->control->dev, "%s\n", __func__); @@ -556,6 +557,8 @@ static int acm_port_activate(struct tty_port *port, struct tty_struct *tty) return 0; error_submit_read_urbs: + for (i = 0; i < acm->rx_buflimit; i++) + usb_kill_urb(acm->read_urbs[i]); acm->ctrlout = 0; acm_set_control(acm, acm->ctrlout); error_set_control: |