linux-kernel - [PATCH 25/36] tty: switch size and count types in iterate_tty_read() to size

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Message-ID: <20230810091510.13006-26-jirislaby@kernel.org>
Date:   Thu, 10 Aug 2023 11:14:59 +0200
From:   "Jiri Slaby (SUSE)" <jirislaby@...nel.org>
To:     gregkh@...uxfoundation.org
Cc:     linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Jiri Slaby (SUSE)" <jirislaby@...nel.org>
Subject: [PATCH 25/36] tty: switch size and count types in iterate_tty_read() to size_t

ld->ops->read() returns ssize_t. copy_to_iter() returns size_t. So
switch the variables ('size' and 'copied', respectively) to the
corresponding types.

This allows for use of min() in the next patch.

Signed-off-by: Jiri Slaby (SUSE) <jirislaby@...nel.org>
---
 drivers/tty/tty_io.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index e8248773e3f0..7cfa99fbbb62 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -850,10 +850,10 @@ static ssize_t iterate_tty_read(struct tty_ldisc *ld, struct tty_struct *tty,
 	unsigned long offset = 0;
 	char kernel_buf[64];
 	ssize_t retval = 0;
-	size_t count = iov_iter_count(to);
+	size_t copied, count = iov_iter_count(to);
 
 	do {
-		int size, copied;
+		ssize_t size;
 
 		size = count > sizeof(kernel_buf) ? sizeof(kernel_buf) : count;
 		size = ld->ops->read(tty, file, kernel_buf, size, &cookie, offset);
-- 
2.41.0