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

Jens Axboe
2024-04-11T15:38:26Z

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