22 lines
689 B
Diff
22 lines
689 B
Diff
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/patch/?id=4291086b1f081b869c6d79e5b7441633dc3ace00
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diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
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index 41fe8a0..fe9d129 100644
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--- a/drivers/tty/n_tty.c
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+++ b/drivers/tty/n_tty.c
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@@ -2353,8 +2353,12 @@ static ssize_t n_tty_write(struct tty_struct *tty, struct file *file,
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if (tty->ops->flush_chars)
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tty->ops->flush_chars(tty);
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} else {
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+ struct n_tty_data *ldata = tty->disc_data;
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+
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while (nr > 0) {
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+ mutex_lock(&ldata->output_lock);
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c = tty->ops->write(tty, b, nr);
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+ mutex_unlock(&ldata->output_lock);
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if (c < 0) {
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retval = c;
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goto break_out;
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--
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cgit v0.10.1
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