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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>
This commit is contained in:
Peter Hurley 2015-11-27 14:11:04 -05:00 committed by Greg Kroah-Hartman
parent e661cf7020
commit b985e9e368
1 changed files with 3 additions and 4 deletions
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7
drivers/tty/n_tty.c
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@ -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)