From e8f2a139ffb600f47c3ddb286e5bd9a71041c35a Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Wed, 5 May 2021 11:19:02 +0200 Subject: [PATCH] n_tty: invert TTY_NORMAL condition in n_tty_receive_buf_standard Handle !TTY_NORMAL as a short path and 'continue' the loop. Do the rest as a normal code flow. This decreases the indentation level by one and makes the code flow more understandable. IOW, we avoid if (cond) { LONG CODE; } else single_line(); by if (!cond) { single_line(); continue; } LONG CODE; While at it, invert also the 'if (!test_bit) A else B' into 'if (test_bit) B else A'. Signed-off-by: Jiri Slaby Link: https://lore.kernel.org/r/20210505091928.22010-10-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman --- drivers/tty/n_tty.c | 31 +++++++++++++++++-------------- 1 file changed, 17 insertions(+), 14 deletions(-) diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index e7c9dce14..01883e5 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -1541,21 +1541,24 @@ static void n_tty_receive_buf_standard(struct tty_struct *tty, continue; } - if (likely(flag == TTY_NORMAL)) { - if (I_ISTRIP(tty)) - c &= 0x7f; - if (I_IUCLC(tty) && L_IEXTEN(tty)) - c = tolower(c); - if (L_EXTPROC(tty)) { - put_tty_queue(c, ldata); - continue; - } - if (!test_bit(c, ldata->char_map)) - n_tty_receive_char(tty, c); - else - n_tty_receive_char_special(tty, c); - } else + if (unlikely(flag != TTY_NORMAL)) { n_tty_receive_char_flagged(tty, c, flag); + continue; + } + + if (I_ISTRIP(tty)) + c &= 0x7f; + if (I_IUCLC(tty) && L_IEXTEN(tty)) + c = tolower(c); + if (L_EXTPROC(tty)) { + put_tty_queue(c, ldata); + continue; + } + + if (test_bit(c, ldata->char_map)) + n_tty_receive_char_special(tty, c); + else + n_tty_receive_char(tty, c); } } -- 2.7.4