From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752860AbeBTQpI (ORCPT ); Tue, 20 Feb 2018 11:45:08 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:35326 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752247AbeBTQpF (ORCPT ); Tue, 20 Feb 2018 11:45:05 -0500 DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org E2A9860712 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=timur@codeaurora.org Subject: Re: [PATCH v2 0/3] Support qcom pinctrl protected pins To: Stephen Boyd , Linus Walleij Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Andy Shevchenko , Bjorn Andersson , linux-gpio@vger.kernel.org, Grant Likely , devicetree@vger.kernel.org References: <20180126011400.2191-1-sboyd@codeaurora.org> From: Timur Tabi Message-ID: <94a7bd07-8ad5-7ab1-20ab-a02fe2476efd@codeaurora.org> Date: Tue, 20 Feb 2018 10:45:03 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: <20180126011400.2191-1-sboyd@codeaurora.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/25/2018 07:13 PM, Stephen Boyd wrote: > This patchset proposes a solution to describing the valid > pins for a pin controller in a semi-generic way so that qcom > platforms can expose the pins that are really available. > > Typically, this has been done by having drivers and firmware > descriptions only use pins they know they have access to, and that > still works now because we no longer read the pin direction at > boot. But there are still some userspace drivers and debugfs facilities > that don't know what pins are available and attempt to read everything > they can. On qcom platforms, this may lead to a system hang, which isn't > very nice behavior, even if root is the only user that can trigger it. Any progress on this patch set? Stephen no longer works for Qualcomm, so I don't know what the next step is, and I really want this feature in 4.17 (we've missed so many merge windows already). -- Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.