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-rw-r--r--arch/um/drivers/line.c2
-rw-r--r--arch/um/drivers/line.h2
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index e5393b4ba9f8..b98545f3edb5 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -184,7 +184,7 @@ void line_flush_chars(struct tty_struct *tty)
line_flush_buffer(tty);
}
-int line_write(struct tty_struct *tty, const u8 *buf, int len)
+ssize_t line_write(struct tty_struct *tty, const u8 *buf, size_t len)
{
struct line *line = tty->driver_data;
unsigned long flags;
diff --git a/arch/um/drivers/line.h b/arch/um/drivers/line.h
index 8354024b6b35..e84fb9b4165e 100644
--- a/arch/um/drivers/line.h
+++ b/arch/um/drivers/line.h
@@ -64,7 +64,7 @@ extern void line_cleanup(struct tty_struct *tty);
extern void line_hangup(struct tty_struct *tty);
extern int line_setup(char **conf, unsigned nlines, char **def,
char *init, char *name);
-extern int line_write(struct tty_struct *tty, const u8 *buf, int len);
+extern ssize_t line_write(struct tty_struct *tty, const u8 *buf, size_t len);
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);