[PATCH 261/437] watchdog: wafer5823wdt: convert to read/write iterators

Jens Axboe
2024-04-11T15:38:57Z

drivers/watchdog/wafer5823wdt.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/watchdog/wafer5823wdt.c b/drivers/watchdog/wafer5823wdt.c
index a8a1ed215e1e..64d6317f058f 100644
--- a/drivers/watchdog/wafer5823wdt.c
+++ b/drivers/watchdog/wafer5823wdt.c
@@ -91,9 +91,9 @@ static void wafwdt_stop(void)
inb_p(wdt_stop);
}

-static ssize_t wafwdt_write(struct file *file, const char __user *buf,
- size_t count, loff_t *ppos)
+static ssize_t wafwdt_write(struct kiocb *iocb, struct iov_iter *from)
{
+ size_t count = iov_iter_count(from);
/* See if we got the magic character 'V' and reload the timer */
if (count) {
if (!nowayout) {
@@ -106,7 +106,7 @@ static ssize_t wafwdt_write(struct file *file, const char __user *buf,
character */
for (i = 0; i != count; i++) {
char c;
- if (get_user(c, buf + i))
+ if (get_iter(c, from))
return -EFAULT;
if (c == 'V')
expect_close = 42;
@@ -228,7 +228,7 @@ static int wafwdt_notify_sys(struct notifier_block *this, unsigned long code,
static const struct file_operations wafwdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
- .write = wafwdt_write,
+ .write_iter = wafwdt_write,
.unlocked_ioctl = wafwdt_ioctl,
.compat_ioctl = compat_ptr_ioctl,
.open = wafwdt_open,
--
2.43.0