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-rw-r--r--include/linux/tty_ldisc.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/tty_ldisc.h b/include/linux/tty_ldisc.h
index b1e6043e9917..572a07976116 100644
--- a/include/linux/tty_ldisc.h
+++ b/include/linux/tty_ldisc.h
@@ -185,7 +185,8 @@ struct tty_ldisc_ops {
void (*close)(struct tty_struct *);
void (*flush_buffer)(struct tty_struct *tty);
ssize_t (*read)(struct tty_struct *tty, struct file *file,
- unsigned char __user *buf, size_t nr);
+ unsigned char *buf, size_t nr,
+ void **cookie, unsigned long offset);
ssize_t (*write)(struct tty_struct *tty, struct file *file,
const unsigned char *buf, size_t nr);
int (*ioctl)(struct tty_struct *tty, struct file *file,