tty: const: constify remaining tty_operations

Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

arch/xtensa/platforms/iss/console.c

@@ -196,7 +196,7 @@ static const struct file_operations rs_proc_fops = {
 	.release	= single_release,
 };
 
-static struct tty_operations serial_ops = {
+static const struct tty_operations serial_ops = {
 	.open = rs_open,
 	.close = rs_close,
 	.write = rs_write,

drivers/char/bfin_jtag_comm.c

@@ -226,7 +226,7 @@ bfin_jc_wait_until_sent(struct tty_struct *tty, int timeout)
 	}
 }
 
-static struct tty_operations bfin_jc_ops = {
+static const struct tty_operations bfin_jc_ops = {
 	.open            = bfin_jc_open,
 	.close           = bfin_jc_close,
 	.write           = bfin_jc_write,

drivers/char/epca.c

@@ -935,7 +935,7 @@ static int info_open(struct tty_struct *tty, struct file *filp)
 	return 0;
 }
 
-static struct tty_operations info_ops = {
+static const struct tty_operations info_ops = {
 	.open = info_open,
 	.ioctl = info_ioctl,
 };

drivers/char/pcmcia/ipwireless/tty.c

@@ -603,7 +603,7 @@ void ipwireless_tty_free(struct ipw_tty *tty)
 	}
 }
 
-static struct tty_operations tty_ops = {
+static const struct tty_operations tty_ops = {
 	.open = ipw_open,
 	.close = ipw_close,
 	.hangup = ipw_hangup,