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>
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index bc613b8..f2f6425 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -2080,10 +2080,9 @@
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)