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-rw-r--r--drivers/char/tty_io.c4
-rw-r--r--include/linux/tty_flip.h4
2 files changed, 4 insertions, 4 deletions
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index 76592ee1fb38..48d795bb8c4b 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -354,7 +354,7 @@ int tty_buffer_request_room(struct tty_struct *tty, size_t size)
EXPORT_SYMBOL_GPL(tty_buffer_request_room);
-int tty_insert_flip_string(struct tty_struct *tty, unsigned char *chars, size_t size)
+int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars, size_t size)
{
int copied = 0;
do {
@@ -378,7 +378,7 @@ int tty_insert_flip_string(struct tty_struct *tty, unsigned char *chars, size_t
EXPORT_SYMBOL_GPL(tty_insert_flip_string);
-int tty_insert_flip_string_flags(struct tty_struct *tty, unsigned char *chars, char *flags, size_t size)
+int tty_insert_flip_string_flags(struct tty_struct *tty, const unsigned char *chars, const char *flags, size_t size)
{
int copied = 0;
do {
diff --git a/include/linux/tty_flip.h b/include/linux/tty_flip.h
index 0c6169fff366..0976a163b459 100644
--- a/include/linux/tty_flip.h
+++ b/include/linux/tty_flip.h
@@ -2,8 +2,8 @@
#define _LINUX_TTY_FLIP_H
extern int tty_buffer_request_room(struct tty_struct *tty, size_t size);
-extern int tty_insert_flip_string(struct tty_struct *tty, unsigned char *chars, size_t size);
-extern int tty_insert_flip_string_flags(struct tty_struct *tty, unsigned char *chars, char *flags, size_t size);
+extern int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars, size_t size);
+extern int tty_insert_flip_string_flags(struct tty_struct *tty, const unsigned char *chars, const char *flags, size_t size);
extern int tty_prepare_flip_string(struct tty_struct *tty, unsigned char **chars, size_t size);
extern int tty_prepare_flip_string_flags(struct tty_struct *tty, unsigned char **chars, char **flags, size_t size);