new-function.patch

diff -Nupr src.orig/drivers/tty/n_tty.c src/drivers/tty/n_tty.c
--- src.orig/drivers/tty/n_tty.c	2025-11-03 16:25:29.659256215 -0500
+++ src/drivers/tty/n_tty.c	2025-11-03 16:26:05.536599271 -0500
@@ -2343,7 +2343,7 @@ more_to_be_read:
  *	 (note that the process_output*() functions take this lock themselves)
  */
 
-static ssize_t n_tty_write(struct tty_struct *tty, struct file *file,
+static ssize_t noinline kpatch_n_tty_write(struct tty_struct *tty, struct file *file,
 			   const u8 *buf, size_t nr)
 {
 	const u8 *b = buf;
@@ -2428,6 +2428,12 @@ break_out:
 	return (b - buf) ? b - buf : retval;
 }
 
+static ssize_t __attribute__((optimize("-fno-optimize-sibling-calls"))) n_tty_write(struct tty_struct *tty, struct file *file,
+										    const unsigned char *buf, size_t nr)
+{
+	return kpatch_n_tty_write(tty, file, buf, nr);
+}
+
 /**
  * n_tty_poll		-	poll method for N_TTY
  * @tty: terminal device