linux-kernel - [PATCH 243/437] watchdog: it8712f_wdt: convert to read/write iterators

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240411153126.16201-244-axboe@kernel.dk>
Date: Thu, 11 Apr 2024 09:16:23 -0600
From: Jens Axboe <axboe@...nel.dk>
To: linux-kernel@...r.kernel.org
Cc: Jens Axboe <axboe@...nel.dk>
Subject: [PATCH 243/437] watchdog: it8712f_wdt: convert to read/write iterators

Signed-off-by: Jens Axboe <axboe@...nel.dk>
---
 drivers/watchdog/it8712f_wdt.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/watchdog/it8712f_wdt.c b/drivers/watchdog/it8712f_wdt.c
index 3ce6a58bd81e..897f312eb5c9 100644
--- a/drivers/watchdog/it8712f_wdt.c
+++ b/drivers/watchdog/it8712f_wdt.c
@@ -228,9 +228,9 @@ static struct notifier_block it8712f_wdt_notifier = {
 	.notifier_call = it8712f_wdt_notify,
 };
 
-static ssize_t it8712f_wdt_write(struct file *file, const char __user *data,
-					size_t len, loff_t *ppos)
+static ssize_t it8712f_wdt_write(struct kiocb *iocb, struct iov_iter *from)
 {
+	size_t len = iov_iter_count(from);
 	/* check for a magic close character */
 	if (len) {
 		size_t i;
@@ -240,7 +240,7 @@ static ssize_t it8712f_wdt_write(struct file *file, const char __user *data,
 		expect_close = 0;
 		for (i = 0; i < len; ++i) {
 			char c;
-			if (get_user(c, data + i))
+			if (get_iter(c, from))
 				return -EFAULT;
 			if (c == 'V')
 				expect_close = 42;
@@ -342,7 +342,7 @@ static int it8712f_wdt_release(struct inode *inode, struct file *file)
 static const struct file_operations it8712f_wdt_fops = {
 	.owner = THIS_MODULE,
 	.llseek = no_llseek,
-	.write = it8712f_wdt_write,
+	.write_iter = it8712f_wdt_write,
 	.unlocked_ioctl = it8712f_wdt_ioctl,
 	.compat_ioctl = compat_ptr_ioctl,
 	.open = it8712f_wdt_open,
-- 
2.43.0