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=-17.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT, USER_IN_DEF_DKIM_WL 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 C0ED4C433E0 for ; Thu, 28 May 2020 19:06:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A2C4A206A1 for ; Thu, 28 May 2020 19:06:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="JCrHj4zv" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406154AbgE1TGZ (ORCPT ); Thu, 28 May 2020 15:06:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57008 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2406029AbgE1TGR (ORCPT ); Thu, 28 May 2020 15:06:17 -0400 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 28224C08C5C7 for ; Thu, 28 May 2020 12:06:17 -0700 (PDT) Received: by mail-yb1-xb49.google.com with SMTP id u6so1180160ybo.18 for ; Thu, 28 May 2020 12:06:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=A3s/v7w0uLuPK97vic+T6n73M3awD9PtOe90Ayg0n5s=; b=JCrHj4zv/MJWVT8lbg9tvILIkK/JOFTvXyBZvaxa6IvI2zKcBDT8fX9rCQ7ZNBBJ09 OWE+X34O9pPczPky0URC65Ec7/ai69kav+mMf0m76alBbe7tPUJzLRTeh5iny0sOAMFN fVYOrSG9VI3Zc1ydo/3rME1iaroPfJ5N+NIt/tCjsBuGfHDYnjfNjnUK91Ky+PxE4pvH /+8dlZe1eYtwARju4JEKvUOGuNBGuqvahDk1cneWikx1+ev7cHZ24ScV0CsOYePwG1Gl zlsCimpLRay5Yro3VKyTUsH2kXB44FmgvTodi7KbI1Vs0v80LQYI0ITkIS9LMTXRIT6k cDtg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=A3s/v7w0uLuPK97vic+T6n73M3awD9PtOe90Ayg0n5s=; b=T8K4DfshlBZvdvfduUsBj+jsb9U7nub5iIrlc5LulgOIcowIM8X08E+yxtPDi3iNfK RyF+jG05zBlawHOLJcXN7b2xeJoujyIZzMOWYmV2VQvBAy3eLvxrvVdhqNerNfZGPueU R11qRUdDhjfZItgimuBFBmV1fTqEbHmRnPCJrEovYm0vUVLwzBRTjCFt0bxDR0jb7mk7 hgXJ98erbmSjvfzbVkL7m+aKi8h7IdVkKJA9+zHnJKvE8gn1L1nl8nh9uBijhCy0JKsZ f30R+azJF72tTLR6c+4SU0XPGHVTDFbvpNyasVbZg8eC/UwlX8cWBEHekh30vus0Rq1G 39jw== X-Gm-Message-State: AOAM531pcd/4zVrnwMfLPiy62UOZ4cG6+j4PWe3RzUiRrr1CGqe9u8L0 wrFgKlgpHuFxEec/SBIUPGdLXnjAirsbCzA= X-Google-Smtp-Source: ABdhPJwCZ6QM94nH29HLL/oVhOoNH1IZE9KaNFtqBSzkMPwEB8fkqCK36h437mzrlFO1aTroBpQr3arfb4QwSS0= X-Received: by 2002:a25:51c1:: with SMTP id f184mr7084372ybb.448.1590692776323; Thu, 28 May 2020 12:06:16 -0700 (PDT) Date: Thu, 28 May 2020 12:06:09 -0700 In-Reply-To: <20200528190610.179984-1-saravanak@google.com> Message-Id: <20200528190610.179984-2-saravanak@google.com> Mime-Version: 1.0 References: <20200528190610.179984-1-saravanak@google.com> X-Mailer: git-send-email 2.27.0.rc0.183.gde8f92d652-goog Subject: [PATCH v2 1/2] driver core: Add dev_set_drv_sync_state() From: Saravana Kannan To: Liam Girdwood , Mark Brown , Greg Kroah-Hartman Cc: Saravana Kannan , John Stultz , linux-kernel@vger.kernel.org, kernel-team@android.com 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 This can be used by frameworks to set the sync_state() helper functions for drivers that don't already have them set. Signed-off-by: Saravana Kannan --- I'm hoping I can drop this patch based on discussions in patch 1/2. include/linux/device.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/include/linux/device.h b/include/linux/device.h index ac8e37cd716a..aac548beb154 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -806,6 +806,18 @@ static inline bool dev_has_sync_state(struct device *dev) return false; } +static inline int dev_set_drv_sync_state(struct device *dev, + void (*fn)(struct device *dev)) +{ + if (!dev || !dev->driver) + return 0; + if (dev->driver->sync_state && dev->driver->sync_state != fn) + return -EBUSY; + if (!dev->driver->sync_state) + dev->driver->sync_state = fn; + return 0; +} + /* * High level routines for use by the bus drivers */ -- 2.27.0.rc0.183.gde8f92d652-goog