From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Return-path: Date: Mon, 26 Jun 2017 15:33:20 +0100 From: Sudip Mukherjee To: Guenter Roeck , Jean Delvare Cc: linux-kernel@vger.kernel.org, Fenghua Yu , linux-hwmon@vger.kernel.org Subject: userspace regression with hwmon Message-ID: <20170626143320.GA1976@sudip-tp> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline List-ID: Hi Guenter, Jean, The patch d72d19c26c41 ("hwmon: (coretemp) Convert to use devm_hwmon_device_register_with_groups") has changed the location of the sysfs nodes from /sys/devices/platform/coretemp.0/ to /sys/devices/platform/coretemp.0/hwmon/hwmon0/ and that has broken some of our usespace applications when we have updated the kernel from v3.8 to v4.4. For now I am reverting that said patch in our production kernel (based on v4.4) but that is not an elegant solution. Do you have any other reports like this? I am sure changing the paths upstream will now break some other userspace. So, what can be an elegant solution to our problem? or do we always need to carry an out-of-tree patch for our production kernel? -- Regards Sudip