From 59df4f4e8e0b9a0abb14ad5128d36d844c3e2689 Mon Sep 17 00:00:00 2001 From: Lucas Magasweran Date: Tue, 8 May 2018 04:43:33 -0700 Subject: hwmon: (core) check parent dev != NULL when chip != NULL hwmon_device_register_with_info() registration API requires a non-NULL parent device when chip is non-NULL. This commit adds a check and documents this requirement. Signed-off-by: Lucas Magasweran Signed-off-by: Guenter Roeck --- Documentation/hwmon/hwmon-kernel-api.txt | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'Documentation/hwmon') diff --git a/Documentation/hwmon/hwmon-kernel-api.txt b/Documentation/hwmon/hwmon-kernel-api.txt index 53a806696c64..eb7a78aebb38 100644 --- a/Documentation/hwmon/hwmon-kernel-api.txt +++ b/Documentation/hwmon/hwmon-kernel-api.txt @@ -71,7 +71,8 @@ hwmon_device_register_with_info is the most comprehensive and preferred means to register a hardware monitoring device. It creates the standard sysfs attributes in the hardware monitoring core, letting the driver focus on reading from and writing to the chip instead of having to bother with sysfs attributes. -Its parameters are described in more detail below. +The parent device parameter cannot be NULL with non-NULL chip info. Its +parameters are described in more detail below. devm_hwmon_device_register_with_info is similar to hwmon_device_register_with_info. However, it is device managed, meaning the -- cgit v1.2.3-59-g8ed1b