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| author | Johan Hovold <jhovold@gmail.com> | 2013-03-21 12:37:28 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-25 13:52:27 -0700 |
| commit | 0a967f62e6623a2a7bb3a5707352b6667c0c649e (patch) | |
| tree | 36062f0011219bda87653d32e7f180e25dcaef4e /drivers/usb/serial/spcp8x5.c | |
| parent | 8413d2fd80a8e1f09a37c371610a89618980b08f (diff) | |
| download | linux-0a967f62e6623a2a7bb3a5707352b6667c0c649e.tar.gz linux-0a967f62e6623a2a7bb3a5707352b6667c0c649e.tar.bz2 linux-0a967f62e6623a2a7bb3a5707352b6667c0c649e.zip | |
USB: spcp8x5: clean up modem status retrieval
Clean up modem status retrieval.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/serial/spcp8x5.c')
| -rw-r--r-- | drivers/usb/serial/spcp8x5.c | 18 |
1 files changed, 7 insertions, 11 deletions
diff --git a/drivers/usb/serial/spcp8x5.c b/drivers/usb/serial/spcp8x5.c index 5779dd819d31..e0093dd22238 100644 --- a/drivers/usb/serial/spcp8x5.c +++ b/drivers/usb/serial/spcp8x5.c @@ -226,31 +226,27 @@ static int spcp8x5_get_msr(struct usb_serial_port *port, u8 *status) { struct spcp8x5_private *priv = usb_get_serial_port_data(port); struct usb_device *dev = port->serial->dev; - u8 *status_buffer; + u8 *buf; int ret; /* I return Permited not support here but seem inval device * is more fix */ if (priv->type == SPCP825_007_TYPE) return -EPERM; - if (status == NULL) - return -EINVAL; - status_buffer = kmalloc(1, GFP_KERNEL); - if (!status_buffer) + buf = kzalloc(1, GFP_KERNEL); + if (!buf) return -ENOMEM; - status_buffer[0] = status[0]; ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_UART_STATUS, GET_UART_STATUS_TYPE, - 0, GET_UART_STATUS_MSR, status_buffer, 1, 100); + 0, GET_UART_STATUS_MSR, buf, 1, 100); if (ret < 0) dev_err(&port->dev, "failed to get modem status: %d", ret); - dev_dbg(&port->dev, "0xc0:0x22:0:6 %d - 0x02%x", ret, *status_buffer); - - status[0] = status_buffer[0]; - kfree(status_buffer); + dev_dbg(&port->dev, "0xc0:0x22:0:6 %d - 0x02%x", ret, *buf); + *status = *buf; + kfree(buf); return ret; } |