From patchwork Tue Mar 17 06:54:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Saravana Kannan X-Patchwork-Id: 11441893 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A0F59913 for ; Tue, 17 Mar 2020 06:56:06 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7939E205ED for ; Tue, 17 Mar 2020 06:56:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="rVKLiTjR"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=google.com header.i=@google.com header.b="tdBd3JXM" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7939E205ED Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:To:From:Subject:References:Mime-Version :Message-Id:In-Reply-To:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=7sLICohE6kxpPV12IBPdF+Oz1+u57lsKQh3wzKKA0GM=; b=rVKLiTjRs9+YrZ s7sU5Q0HVJhWGCV6qvyu9ughKBN/ynW+0Ct6Hp1twzV/lkj2HAt2iqGfw3dXbfqISJLXnX6yXc6MW bwE6xvrcljBl17vdEWr1NluHB3VMAk+/qNbDUjOyh9Lru09qsPkl0UZTpyQgFewqy8b2OblWdzfL4 TB6UHwxOo/Hg5jGBKlE2vTUPpvVySnXYBe7svYbq+Y4sorsC2GYHy2Ngt27o06q0nXsI1Oi07hyYk mb+QWg6QLyGmBwsS3xh6sNbW9sFBiwcJ3sA/ArNJCHazxO5lou0zhvB8BhywQgEPEg8o9O4hRyXjG F8xb+i2DOpJijcNX9hcw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jE68v-0005Ny-8e; Tue, 17 Mar 2020 06:56:01 +0000 Received: from mail-qt1-x84a.google.com ([2607:f8b0:4864:20::84a]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jE682-0003XZ-G5 for linux-arm-kernel@lists.infradead.org; Tue, 17 Mar 2020 06:55:11 +0000 Received: by mail-qt1-x84a.google.com with SMTP id v10so20087036qtk.7 for ; Mon, 16 Mar 2020 23:55:02 -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=Vz8Rl+tO3s2Fvzy9mMmth3PcVEenCGW3CyqKGLCsJ9M=; b=tdBd3JXMEOE0YT+L7rwOPZHaK8kRVwY4smj7X3+QwEyDXEwn7tlhTF4Ytp0NC86X6q fT+BVMQpi67m9Q7lWDaj5yz1NykcSCPNpGQVIgCGqBeH1Z3YwPU9zQxS2D9ZnXph+o+9 hQBq1hYrgu7RWtKAszJvhlM964Knk9Pwoh/q+j+w4Kvxg0e3dKq1Mkb9+356AB/d/H7h iAD7OzZ0QrCyxEdaBvXRTCqKVt8QlI4DQXlT6N+Mz+wM845Q62Q3guDM61RAa9rg7bzG /LgCZAZbkmbfP7IiHAyTZtQ6S9+jLL1Ghvq0dxxWFL35GKxD7ldotwJLihuEfRF9jzU2 dnsg== 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=Vz8Rl+tO3s2Fvzy9mMmth3PcVEenCGW3CyqKGLCsJ9M=; b=mv8ol4Pq5/i8zvar8PlHar7pb6VtkL7Kn3vu3sSmCg5EEiz9NWpuOkxBGZIRMFRA77 GAr+Vi2tX7XIR8p8S56HuqewqnLoStMfoDYC3XKTlmdQkCN6AJEcVv+c7GZzHJ1+GWYk arQyGz4A97ObDTB+SULJZs82dDPBB2d1jqEAD/yPolkc1CL9LgSqafvZFSWgi3yHFNqU QiRs3ccC07MgdLLvtQQEs/k0xrC2KhQHPybPFm+Y3uyjgOybUdglTXX7cFK98jaitLnw /V2uDzV4cXRo6h6WaUGNHG8HzCABXI1S/E7c0veYQAKMgHA/OkgZRytmcBABDIxUv4MT E2/A== X-Gm-Message-State: ANhLgQ3jqEKtvnZY0h0js1sky1vw1hWw9K5supCz+zHE/Ph9XUXrOob7 lSvf0DjaeM6pH4rXtfV+RAqrnFKUgiWhul8= X-Google-Smtp-Source: ADFU+vslXcTXZHxFbul+vKyVDDYbE109vB2qzmfCtTVliZ++Zd5h8tOc4jJH81ED+tXuc5j8cMzPwT/wJ2uvyfk= X-Received: by 2002:ac8:5193:: with SMTP id c19mr3907270qtn.204.1584428101406; Mon, 16 Mar 2020 23:55:01 -0700 (PDT) Date: Mon, 16 Mar 2020 23:54:47 -0700 In-Reply-To: <20200317065452.236670-1-saravanak@google.com> Message-Id: <20200317065452.236670-2-saravanak@google.com> Mime-Version: 1.0 References: <20200317065452.236670-1-saravanak@google.com> X-Mailer: git-send-email 2.25.1.481.gfbce0eb801-goog Subject: [PATCH v1 1/6] driver core: Remove the link if there is no driver with AUTO flag From: Saravana Kannan To: stable@vger.kernel.org, Jonathan Corbet , Greg Kroah-Hartman , "Rafael J. Wysocki" , Len Brown , Pavel Machek , Matthias Brugger X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200316_235506_587024_1A0C404D X-CRM114-Status: GOOD ( 11.61 ) X-Spam-Score: -7.7 (-------) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (-7.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2607:f8b0:4864:20:0:0:0:84a listed in] [list.dnswl.org] -7.5 USER_IN_DEF_DKIM_WL From: address is in the default DKIM white-list -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.0 DKIMWL_WL_MED DKIMwl.org - Medium sender X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Saravana Kannan , linux-pm@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, Yong Wu , kernel-team@android.com, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Yong Wu DL_FLAG_AUTOREMOVE_CONSUMER/SUPPLIER means "Remove the link automatically on consumer/supplier driver unbind", that means we should remove whole the device_link when there is no this driver no matter what the ref_count of the link is. CC: Greg Kroah-Hartman Signed-off-by: Yong Wu Signed-off-by: Greg Kroah-Hartman (cherry picked from commit 0fe6f7874d467456da6f6a221dd92499a3ab1780) Signed-off-by: Saravana Kannan --- drivers/base/core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/base/core.c b/drivers/base/core.c index 742bc60e9cca..b354fdd7ce75 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -546,7 +546,7 @@ static void __device_links_no_driver(struct device *dev) continue; if (link->flags & DL_FLAG_AUTOREMOVE_CONSUMER) - kref_put(&link->kref, __device_link_del); + __device_link_del(&link->kref); else if (link->status != DL_STATE_SUPPLIER_UNBIND) WRITE_ONCE(link->status, DL_STATE_AVAILABLE); } @@ -591,7 +591,7 @@ void device_links_driver_cleanup(struct device *dev) */ if (link->status == DL_STATE_SUPPLIER_UNBIND && link->flags & DL_FLAG_AUTOREMOVE_SUPPLIER) - kref_put(&link->kref, __device_link_del); + __device_link_del(&link->kref); WRITE_ONCE(link->status, DL_STATE_DORMANT); }