diff options
| author | Alex Shi <alex.shi@linaro.org> | 2017-03-20 12:03:10 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2017-03-20 12:03:10 +0800 |
| commit | e0d60977f25c7a33b2acda240a1d121bf0a35deb (patch) | |
| tree | 4f930533fa1e36e0ec75ee8bcaa82d2320985a2c /drivers/usb/serial/digi_acceleport.c | |
| parent | 4304568925f8191755da36df5c61abb69db9b1b0 (diff) | |
| parent | 1c563c0006661025d7a6c9bc85fc889a4e8a1c06 (diff) | |
Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-androidlsk-v4.4-17.03-android
Diffstat (limited to 'drivers/usb/serial/digi_acceleport.c')
| -rw-r--r-- | drivers/usb/serial/digi_acceleport.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c index 3df7b7ec178e..e0b1fe2f60e1 100644 --- a/drivers/usb/serial/digi_acceleport.c +++ b/drivers/usb/serial/digi_acceleport.c @@ -1483,16 +1483,20 @@ static int digi_read_oob_callback(struct urb *urb) struct usb_serial *serial = port->serial; struct tty_struct *tty; struct digi_port *priv = usb_get_serial_port_data(port); + unsigned char *buf = urb->transfer_buffer; int opcode, line, status, val; int i; unsigned int rts; + if (urb->actual_length < 4) + return -1; + /* handle each oob command */ - for (i = 0; i < urb->actual_length - 3;) { - opcode = ((unsigned char *)urb->transfer_buffer)[i++]; - line = ((unsigned char *)urb->transfer_buffer)[i++]; - status = ((unsigned char *)urb->transfer_buffer)[i++]; - val = ((unsigned char *)urb->transfer_buffer)[i++]; + for (i = 0; i < urb->actual_length - 3; i += 4) { + opcode = buf[i]; + line = buf[i + 1]; + status = buf[i + 2]; + val = buf[i + 3]; dev_dbg(&port->dev, "digi_read_oob_callback: opcode=%d, line=%d, status=%d, val=%d\n", opcode, line, status, val); |