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tty: use min() for size computation in iterate_tty_read()

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The computation is more obvious with min().

Signed-off-by: "Jiri Slaby (SUSE)" <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20230810091510.13006-27-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby (SUSE) 2023-08-10 11:15:00 +02:00 committed by Greg Kroah-Hartman
parent e3afc5b0d7
commit 48a6ab8867
1 changed files with 1 additions and 2 deletions
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3
drivers/tty/tty_io.c
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@ -853,9 +853,8 @@ static ssize_t iterate_tty_read(struct tty_ldisc *ld, struct tty_struct *tty,
size_t copied, count = iov_iter_count(to); size_t copied, count = iov_iter_count(to);
do { do {
ssize_t size; ssize_t size = min(count, sizeof(kernel_buf));
size = count > sizeof(kernel_buf) ? sizeof(kernel_buf) : count;
size = ld->ops->read(tty, file, kernel_buf, size, &cookie, offset); size = ld->ops->read(tty, file, kernel_buf, size, &cookie, offset);
if (!size) if (!size)
break; break;