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-rw-r--r--arch/um/drivers/line.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/um/drivers/line.h b/arch/um/drivers/line.h
index 861edf329569..3325e2bc64e4 100644
--- a/arch/um/drivers/line.h
+++ b/arch/um/drivers/line.h
@@ -67,7 +67,7 @@ extern int line_setup(char **conf, unsigned nlines, char **def,
extern int line_write(struct tty_struct *tty, const unsigned char *buf,
int len);
extern void line_set_termios(struct tty_struct *tty, struct ktermios * old);
-extern int line_chars_in_buffer(struct tty_struct *tty);
+extern unsigned int line_chars_in_buffer(struct tty_struct *tty);
extern void line_flush_buffer(struct tty_struct *tty);
extern void line_flush_chars(struct tty_struct *tty);
extern unsigned int line_write_room(struct tty_struct *tty);