From: Tilman Schmidt Date: Mon, 13 Jul 2015 22:37:13 +0000 (+0200) Subject: isdn/gigaset: drop unused ldisc methods X-Git-Tag: firefly_0821_release~176^2~1383^2~35^2 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=62c13bad39211387afd4354e8e127a535d13e70d;hp=fd98e9419d8d622a4de91f76b306af6aa627aa9c;p=firefly-linux-kernel-4.4.55.git isdn/gigaset: drop unused ldisc methods The line discipline read and write methods are optional so the dummy methods in ser_gigaset are unnecessary and can be removed. Signed-off-by: Tilman Schmidt Signed-off-by: David S. Miller --- diff --git a/drivers/isdn/gigaset/ser-gigaset.c b/drivers/isdn/gigaset/ser-gigaset.c index 3ac9c4194814..375be509e95f 100644 --- a/drivers/isdn/gigaset/ser-gigaset.c +++ b/drivers/isdn/gigaset/ser-gigaset.c @@ -606,28 +606,6 @@ static int gigaset_tty_hangup(struct tty_struct *tty) return 0; } -/* - * Read on the tty. - * Unused, received data goes only to the Gigaset driver. - */ -static ssize_t -gigaset_tty_read(struct tty_struct *tty, struct file *file, - unsigned char __user *buf, size_t count) -{ - return -EAGAIN; -} - -/* - * Write on the tty. - * Unused, transmit data comes only from the Gigaset driver. - */ -static ssize_t -gigaset_tty_write(struct tty_struct *tty, struct file *file, - const unsigned char *buf, size_t count) -{ - return -EAGAIN; -} - /* * Ioctl on the tty. * Called in process context only. @@ -761,8 +739,6 @@ static struct tty_ldisc_ops gigaset_ldisc = { .open = gigaset_tty_open, .close = gigaset_tty_close, .hangup = gigaset_tty_hangup, - .read = gigaset_tty_read, - .write = gigaset_tty_write, .ioctl = gigaset_tty_ioctl, .receive_buf = gigaset_tty_receive, .write_wakeup = gigaset_tty_wakeup,