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path: root/drivers/usb/serial/ssu100.c
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Diffstat (limited to 'drivers/usb/serial/ssu100.c')
-rw-r--r--drivers/usb/serial/ssu100.c19
1 files changed, 8 insertions, 11 deletions
diff --git a/drivers/usb/serial/ssu100.c b/drivers/usb/serial/ssu100.c
index 4543ea350229..d938396171e8 100644
--- a/drivers/usb/serial/ssu100.c
+++ b/drivers/usb/serial/ssu100.c
@@ -506,19 +506,16 @@ static void ssu100_dtr_rts(struct usb_serial_port *port, int on)
{
struct usb_device *dev = port->serial->dev;
- mutex_lock(&port->serial->disc_mutex);
- if (!port->serial->disconnected) {
- /* Disable flow control */
- if (!on &&
- ssu100_setregister(dev, 0, UART_MCR, 0) < 0)
+ /* Disable flow control */
+ if (!on) {
+ if (ssu100_setregister(dev, 0, UART_MCR, 0) < 0)
dev_err(&port->dev, "error from flowcontrol urb\n");
- /* drop RTS and DTR */
- if (on)
- set_mctrl(dev, TIOCM_DTR | TIOCM_RTS);
- else
- clear_mctrl(dev, TIOCM_DTR | TIOCM_RTS);
}
- mutex_unlock(&port->serial->disc_mutex);
+ /* drop RTS and DTR */
+ if (on)
+ set_mctrl(dev, TIOCM_DTR | TIOCM_RTS);
+ else
+ clear_mctrl(dev, TIOCM_DTR | TIOCM_RTS);
}
static void ssu100_update_msr(struct usb_serial_port *port, u8 msr)