tty: const: constify remaining tty_operations

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

diff --git a/arch/xtensa/platforms/iss/console.c b/arch/xtensa/platforms/iss/console.c
index 4c559cf..e60a1f5 100644
--- a/arch/xtensa/platforms/iss/console.c
+++ b/arch/xtensa/platforms/iss/console.c
@@ -196,7 +196,7 @@
 	.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,
diff --git a/drivers/char/bfin_jtag_comm.c b/drivers/char/bfin_jtag_comm.c
index 1d7c34c..2628c74 100644
--- a/drivers/char/bfin_jtag_comm.c
+++ b/drivers/char/bfin_jtag_comm.c
@@ -226,7 +226,7 @@
 	}
 }
 
-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,
diff --git a/drivers/char/epca.c b/drivers/char/epca.c
index dde5134..17b044a 100644
--- a/drivers/char/epca.c
+++ b/drivers/char/epca.c
@@ -935,7 +935,7 @@
 	return 0;
 }
 
-static struct tty_operations info_ops = {
+static const struct tty_operations info_ops = {
 	.open = info_open,
 	.ioctl = info_ioctl,
 };
diff --git a/drivers/char/pcmcia/ipwireless/tty.c b/drivers/char/pcmcia/ipwireless/tty.c
index 674b3ab..2bb7874 100644
--- a/drivers/char/pcmcia/ipwireless/tty.c
+++ b/drivers/char/pcmcia/ipwireless/tty.c
@@ -603,7 +603,7 @@
 	}
 }
 
-static struct tty_operations tty_ops = {
+static const struct tty_operations tty_ops = {
 	.open = ipw_open,
 	.close = ipw_close,
 	.hangup = ipw_hangup,