Once there is no more handlers for TIOC[GS]RS485 there is no need to
call the driver specific ioctl when the generic implementation is
missing.
Reviewed-by: Alan Cox <alan@xxxxxxxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Jiri Slaby <jslaby@xxxxxxx>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@xxxxxxxxx>
---
drivers/tty/serial/serial_core.c | 17 +++++------------
1 file changed, 5 insertions(+), 12 deletions(-)
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 21462a6..652cce7 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -1155,9 +1155,6 @@ static int uart_get_icount(struct tty_struct *tty,
static int uart_get_rs485_config(struct uart_port *port,
struct serial_rs485 __user *rs485)
{
- if (!port->rs485_config)
- return -ENOIOCTLCMD;
-
if (copy_to_user(rs485, &port->rs485, sizeof(port->rs485)))
return -EFAULT;
return 0;
@@ -1255,7 +1252,12 @@ uart_ioctl(struct tty_struct *tty, unsigned int cmd,
* All these rely on hardware being present and need to be
* protected against the tty being hung up.
*/
+
switch (cmd) {
+ case TIOCSERGETLSR: /* Get line status register */
+ ret = uart_get_lsr_info(tty, state, uarg);
+ break;
+
case TIOCGRS485:
ret = uart_get_rs485_config(state->uart_port, uarg);
break;
@@ -1263,15 +1265,6 @@ uart_ioctl(struct tty_struct *tty, unsigned int cmd,
case TIOCSRS485:
ret = uart_set_rs485_config(state->uart_port, uarg);
break;
- }
- if (ret != -ENOIOCTLCMD)
- goto out;
-
- switch (cmd) {
- case TIOCSERGETLSR: /* Get line status register */
- ret = uart_get_lsr_info(tty, state, uarg);
- break;
-
default: {
struct uart_port *uport = state->uart_port;
if (uport->ops->ioctl)
--
2.1.1
--
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