[PATCH 016/437] char/dsp1620: convert to read/write iterators

Jens Axboe
2024-04-11T15:31:57Z

drivers/char/ds1620.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/char/ds1620.c b/drivers/char/ds1620.c
index cf89a9631107..036f1db308d2 100644
--- a/drivers/char/ds1620.c
+++ b/drivers/char/ds1620.c
@@ -216,8 +216,7 @@ static int ds1620_open(struct inode *inode, struct file *file)
return stream_open(inode, file);
}

-static ssize_t
-ds1620_read(struct file *file, char __user *buf, size_t count, loff_t *ptr)
+static ssize_t ds1620_read(struct kiocb *iocb, struct iov_iter *to)
{
signed int cur_temp;
signed char cur_temp_degF;
@@ -227,7 +226,7 @@ ds1620_read(struct file *file, char __user *buf, size_t count, loff_t *ptr)
/* convert to Fahrenheit, as per wdt.c */
cur_temp_degF = (cur_temp * 9) / 5 + 32;

- if (copy_to_user(buf, &cur_temp_degF, 1))
+ if (!copy_to_iter_full(&cur_temp_degF, 1, to))
return -EFAULT;

return 1;
@@ -351,7 +350,7 @@ static int ds1620_proc_therm_show(struct seq_file *m, void *v)
static const struct file_operations ds1620_fops = {
.owner = THIS_MODULE,
.open = ds1620_open,
- .read = ds1620_read,
+ .read_iter = ds1620_read,
.unlocked_ioctl = ds1620_unlocked_ioctl,
.llseek = no_llseek,
};
--
2.43.0