[PATCH 2/2] iio: core: make use of simple_write_to_buffer()

["Nuno Sá via B4 Relay" <devnull+nuno.sa.analog.com@kernel.org>]

From: Nuno Sá <nuno.sa@analog.com>

Instead of open coding (kind of) simple_write_to_buffer(), use it.

While at it, use ascii representation to terminate the string as that is
the more common way of doing it.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
---
 drivers/iio/industrialio-core.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index a2117ad1337d55468c0f21c274fcbedd352c97ff..b9f4113ae5fc3ee1ef76be6808cc437286690dae 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -410,11 +410,12 @@ static ssize_t iio_debugfs_write_reg(struct file *file,
 	char buf[80];
 	int ret;
 
-	count = min(count, sizeof(buf) - 1);
-	if (copy_from_user(buf, userbuf, count))
-		return -EFAULT;
+	ret = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, userbuf,
+				     count);
+	if (ret < 0)
+		return ret;
 
-	buf[count] = 0;
+	buf[count] = '\0';
 
 	ret = sscanf(buf, "%i %i", &reg, &val);
 

-- 
2.48.1