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tty: n_tty: simplify chars_in_buffer()
The 'if' in chars_in_buffer() is misleadingly inverted. And since the only difference is the head used for computation, cache the head using ternary operator. And use that in return directly. Signed-off-by: "Jiri Slaby (SUSE)" <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20230827074147.2287-11-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 2 additions and 6 deletions
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@ -219,13 +219,9 @@ static void n_tty_kick_worker(const struct tty_struct *tty)
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static ssize_t chars_in_buffer(const struct tty_struct *tty)
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{
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const struct n_tty_data *ldata = tty->disc_data;
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ssize_t n = 0;
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size_t head = ldata->icanon ? ldata->canon_head : ldata->commit_head;
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if (!ldata->icanon)
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n = ldata->commit_head - ldata->read_tail;
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else
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n = ldata->canon_head - ldata->read_tail;
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return n;
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return head - ldata->read_tail;
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}
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/**
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