[PATCH 275/437] watchdog: sb_wdog: convert to read/write iterators

Jens Axboe
2024-04-11T15:39:17Z

drivers/watchdog/sb_wdog.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/watchdog/sb_wdog.c b/drivers/watchdog/sb_wdog.c
index 504be461f992..cb1123b7bdbf 100644
--- a/drivers/watchdog/sb_wdog.c
+++ b/drivers/watchdog/sb_wdog.c
@@ -141,9 +141,9 @@ static int sbwdog_release(struct inode *inode, struct file *file)
/*
* 42 - the answer
*/
-static ssize_t sbwdog_write(struct file *file, const char __user *data,
- size_t len, loff_t *ppos)
+static ssize_t sbwdog_write(struct kiocb *iocb, struct iov_iter *from)
{
+ size_t len = iov_iter_count(from);
int i;

if (len) {
@@ -155,7 +155,7 @@ static ssize_t sbwdog_write(struct file *file, const char __user *data,
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;
@@ -235,7 +235,7 @@ static int sbwdog_notify_sys(struct notifier_block *this, unsigned long code,
static const struct file_operations sbwdog_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
- .write = sbwdog_write,
+ .write_iter = sbwdog_write,
.unlocked_ioctl = sbwdog_ioctl,
.compat_ioctl = compat_ptr_ioctl,
.open = sbwdog_open,
--
2.43.0