Replace custom ioctl operation with tiocmiwait.
Signed-off-by: Johan Hovold <jhovold@xxxxxxxxx>
---
drivers/usb/serial/cypress_m8.c | 85 +++++++++++++++++------------------------
1 file changed, 36 insertions(+), 49 deletions(-)
diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c
index ba7352e..cdbb096 100644
--- a/drivers/usb/serial/cypress_m8.c
+++ b/drivers/usb/serial/cypress_m8.c
@@ -129,13 +129,12 @@ static int cypress_write(struct tty_struct *tty, struct usb_serial_port *port,
const unsigned char *buf, int count);
static void cypress_send(struct usb_serial_port *port);
static int cypress_write_room(struct tty_struct *tty);
-static int cypress_ioctl(struct tty_struct *tty,
- unsigned int cmd, unsigned long arg);
static void cypress_set_termios(struct tty_struct *tty,
struct usb_serial_port *port, struct ktermios *old);
static int cypress_tiocmget(struct tty_struct *tty);
static int cypress_tiocmset(struct tty_struct *tty,
unsigned int set, unsigned int clear);
+static int cypress_tiocmiwait(struct tty_struct *tty, unsigned long arg);
static int cypress_chars_in_buffer(struct tty_struct *tty);
static void cypress_throttle(struct tty_struct *tty);
static void cypress_unthrottle(struct tty_struct *tty);
@@ -158,10 +157,10 @@ static struct usb_serial_driver cypress_earthmate_device = {
.dtr_rts = cypress_dtr_rts,
.write = cypress_write,
.write_room = cypress_write_room,
- .ioctl = cypress_ioctl,
.set_termios = cypress_set_termios,
.tiocmget = cypress_tiocmget,
.tiocmset = cypress_tiocmset,
+ .tiocmiwait = cypress_tiocmiwait,
.chars_in_buffer = cypress_chars_in_buffer,
.throttle = cypress_throttle,
.unthrottle = cypress_unthrottle,
@@ -184,10 +183,10 @@ static struct usb_serial_driver cypress_hidcom_device = {
.dtr_rts = cypress_dtr_rts,
.write = cypress_write,
.write_room = cypress_write_room,
- .ioctl = cypress_ioctl,
.set_termios = cypress_set_termios,
.tiocmget = cypress_tiocmget,
.tiocmset = cypress_tiocmset,
+ .tiocmiwait = cypress_tiocmiwait,
.chars_in_buffer = cypress_chars_in_buffer,
.throttle = cypress_throttle,
.unthrottle = cypress_unthrottle,
@@ -210,10 +209,10 @@ static struct usb_serial_driver cypress_ca42v2_device = {
.dtr_rts = cypress_dtr_rts,
.write = cypress_write,
.write_room = cypress_write_room,
- .ioctl = cypress_ioctl,
.set_termios = cypress_set_termios,
.tiocmget = cypress_tiocmget,
.tiocmset = cypress_tiocmset,
+ .tiocmiwait = cypress_tiocmiwait,
.chars_in_buffer = cypress_chars_in_buffer,
.throttle = cypress_throttle,
.unthrottle = cypress_unthrottle,
@@ -855,55 +854,43 @@ static int cypress_tiocmset(struct tty_struct *tty,
}
-static int cypress_ioctl(struct tty_struct *tty,
- unsigned int cmd, unsigned long arg)
+static int cypress_tiocmiwait(struct tty_struct *tty, unsigned long arg)
{
struct usb_serial_port *port = tty->driver_data;
struct cypress_private *priv = usb_get_serial_port_data(port);
-
- dev_dbg(&port->dev, "%s - port %d, cmd 0x%.4x\n", __func__, port->number, cmd);
-
- switch (cmd) {
- /* This code comes from drivers/char/serial.c and ftdi_sio.c */
- case TIOCMIWAIT:
- for (;;) {
- interruptible_sleep_on(&port->delta_msr_wait);
- /* see if a signal did it */
- if (signal_pending(current))
- return -ERESTARTSYS;
-
- if (port->serial->disconnected)
- return -EIO;
-
- {
- char diff = priv->diff_status;
- if (diff == 0)
- return -EIO; /* no change => error */
-
- /* consume all events */
- priv->diff_status = 0;
-
- /* return 0 if caller wanted to know about
- these bits */
- if (((arg & TIOCM_RNG) && (diff & UART_RI)) ||
- ((arg & TIOCM_DSR) && (diff & UART_DSR)) ||
- ((arg & TIOCM_CD) && (diff & UART_CD)) ||
- ((arg & TIOCM_CTS) && (diff & UART_CTS)))
- return 0;
- /* otherwise caller can't care less about what
- * happened, and so we continue to wait for
- * more events.
- */
- }
- }
- return 0;
- default:
- break;
+ char diff;
+
+ for (;;) {
+ interruptible_sleep_on(&port->delta_msr_wait);
+ /* see if a signal did it */
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+
+ if (port->serial->disconnected)
+ return -EIO;
+
+ diff = priv->diff_status;
+ if (diff == 0)
+ return -EIO; /* no change => error */
+
+ /* consume all events */
+ priv->diff_status = 0;
+
+ /* return 0 if caller wanted to know about
+ these bits */
+ if (((arg & TIOCM_RNG) && (diff & UART_RI)) ||
+ ((arg & TIOCM_DSR) && (diff & UART_DSR)) ||
+ ((arg & TIOCM_CD) && (diff & UART_CD)) ||
+ ((arg & TIOCM_CTS) && (diff & UART_CTS)))
+ return 0;
+ /* otherwise caller can't care less about what
+ * happened, and so we continue to wait for
+ * more events.
+ */
}
- dev_dbg(&port->dev, "%s - arg not supported - it was 0x%04x - check include/asm/ioctls.h\n", __func__, cmd);
- return -ENOIOCTLCMD;
-} /* cypress_ioctl */
+ return 0;
+}
static void cypress_set_termios(struct tty_struct *tty,
struct usb_serial_port *port, struct ktermios *old_termios)
--
1.8.1.5
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