From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andy Shevchenko Subject: Re: i2c-designware: sound and s2ram broken on Broadwell-U system since commit ca382f5b38f367b6 (add i2c gpio recovery option) Date: Sat, 17 Feb 2018 17:02:53 +0200 Message-ID: <1518879773.22495.378.camel@linux.intel.com> References: <20180217132543.GA21571@light.dominikbrodowski.net> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: Received: from mga05.intel.com ([192.55.52.43]:48015 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750977AbeBQPC4 (ORCPT ); Sat, 17 Feb 2018 10:02:56 -0500 In-Reply-To: <20180217132543.GA21571@light.dominikbrodowski.net> Sender: linux-i2c-owner@vger.kernel.org List-Id: linux-i2c@vger.kernel.org To: Dominik Brodowski , tim@krieglstein.org, jarkko.nikula@linux.intel.com, preid@electromag.com.au, wsa@the-dreams.de Cc: linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org On Sat, 2018-02-17 at 14:25 +0100, Dominik Brodowski wrote: > on v4.16-rc1+, sound does not work any more on my Dell XPS 13; > suspend-to-RAM hangs as well. I have bisected this problem down to > commit ca382f5b38f3; reverting this on top of Linus' latest > (1e3510b2b053) > fixes these issues. > And a few snippets from a broken kernel dmesg: > > i2c_designware: probe of INT3432:00 failed with error -38 > i2c_designware: probe of INT3433:00 failed with error -38 ENOSYS here at probe time, taking into account the commit you think is a culprit, can be passed from gpiod_get() calls only. > Ideas on how to fix this properly? Enable CONFIG_DEBUG_GPIO first and share through some service the dmesg. (it might be good idea to add 'ignore_loglevel initcall_debug' to the kernel command line) -- Andy Shevchenko Intel Finland Oy