From 6d5dd486c715908b5a6ed02315a15ff044a91025 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nuno=20S=C3=A1?= Date: Tue, 18 Feb 2025 10:31:26 +0000 Subject: [PATCH] iio: core: make use of simple_write_to_buffer() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: David Lechner Link: https://patch.msgid.link/20250218-dev-iio-misc-v1-2-bf72b20a1eb8@analog.com Signed-off-by: Jonathan Cameron --- 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 a2117ad1337d..b9f4113ae5fc 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", ®, &val);