From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E3F57C6778A for ; Mon, 9 Jul 2018 13:18:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9DE0C20881 for ; Mon, 9 Jul 2018 13:18:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=linaro.org header.i=@linaro.org header.b="J/IeoFsO" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9DE0C20881 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754521AbeGINSS (ORCPT ); Mon, 9 Jul 2018 09:18:18 -0400 Received: from mail-io0-f193.google.com ([209.85.223.193]:33263 "EHLO mail-io0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754334AbeGINSQ (ORCPT ); Mon, 9 Jul 2018 09:18:16 -0400 Received: by mail-io0-f193.google.com with SMTP id z20-v6so17015737iol.0 for ; Mon, 09 Jul 2018 06:18:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=S6MNXx28OtzqQeC0kFhQz+d0hmFk7XZHg1N0DAiX9+E=; b=J/IeoFsO7gOLaO94y1voIWoBGvLbOSkYgtHNChJ8L4BywR4OWGe3K7fv+RxxGsI5kn /WY1TVhTVxE4bHVwq00+M7PgfPkaV/bZAIwzzCrv+Ci9ThwUqVwjwKfhRddSsMFq+uyV nGxTR/Jy9unjZFc8/HH307vDCxtBTioQ8iH0c= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=S6MNXx28OtzqQeC0kFhQz+d0hmFk7XZHg1N0DAiX9+E=; b=ZFTp6mBXbGJMMQN7qebwHXRxwfPI4Xja3KOSBx3dwC/kHyQUEGXY7jC09OObiUbEWH 9mJYyde7UK1iLv0YbCdZXUkhvmYZQrw7ENpwI7mE5BlGNp46dD/Ntan9aNGZEJTjP3x4 7fMDF1zXo2Y0i6UwwaJvTadFZIIN9VjQzDXXTIGTiaVTEuFezaVLig1wliZOTmB/LdLa t6qzyo82qAYX0uav+euVTourW1PqaZxiMtwv6ZtYCzR5ADv9uZkfYO5E1e9PuPob8GMX s1RrCHWjpnCQKErG0MHTya5lCgTdfkeuHHlfAKkqiCiud2TgUZl4oHoURchtmX+xTG6f kLwQ== X-Gm-Message-State: APt69E3xzvaJN7ZJz105kFhLT5aETFSVAWYA0y1h/J3LqSSESnyDaoNl i+5vFZr5Sk/xWQP7wfop+uKMbJhvvr8UPM9OofaLIg== X-Google-Smtp-Source: AAOMgpeVyFIeD2jfok20cObDRDAhxW5htFjFHQlHkCz8yHDQ7ZXCmVYbGU0ohAAo3ibW/qwqZsgQsZ0f/GQ9JPQaV2o= X-Received: by 2002:a6b:4a15:: with SMTP id w21-v6mr15949161iob.277.1531142296339; Mon, 09 Jul 2018 06:18:16 -0700 (PDT) MIME-Version: 1.0 References: <20180703172635.32508-1-jmkrzyszt@gmail.com> <20180703221819.1825-1-jmkrzyszt@gmail.com> In-Reply-To: <20180703221819.1825-1-jmkrzyszt@gmail.com> From: Linus Walleij Date: Mon, 9 Jul 2018 15:18:04 +0200 Message-ID: Subject: Re: [PATCH v2] gpiolib: Defer on non-DT find_chip_by_name() failure To: Janusz Krzysztofik Cc: Boris Brezillon , "open list:GPIO SUBSYSTEM" , "linux-kernel@vger.kernel.org" , Andy Shevchenko Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jul 4, 2018 at 12:18 AM Janusz Krzysztofik wrote: > Avoid replication of error code conversion in non-DT GPIO consumers' > code by returning -EPROBE_DEFER from gpiod_find() in case a chip > identified by its label in a registered lookup table is not ready. > > See https://lkml.org/lkml/2018/5/30/176 for example case. > > Suggested-by: Boris Brezillon > Signed-off-by: Janusz Krzysztofik > Reviewed-by: Boris Brezillon > --- > Changelog > v2: fix typo (latar -> later) - thanks Boris and Andy for catching this Patch applied as the discussion seems to conclude this should work fine, I hope we will notice if it doesn't! Yours, Linus Walleij