n_tty: Reduce branching in canon_copy_from_read_buf()

Instead of compare-and-set, just compute 'found'.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 3 insertions, 4 deletions

diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index bc613b868e71..f2f64252814f 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -2080,10 +2080,9 @@ static int canon_copy_from_read_buf(struct tty_struct *tty,
         if (eol == N_TTY_BUF_SIZE && more) {
                 /* scan wrapped without finding set bit */
                 eol = find_next_bit(ldata->read_flags, more, 0);
-                if (eol != more)
-                        found = 1;
-        } else if (eol != size)
-                found = 1;
+                found = eol != more;
+        } else
+                found = eol != size;
 
         n = eol - tail;
         if (n > N_TTY_BUF_SIZE)