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=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 60CDAC282C3 for ; Thu, 24 Jan 2019 21:42:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3B09E218B0 for ; Thu, 24 Jan 2019 21:42:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728035AbfAXVmu (ORCPT ); Thu, 24 Jan 2019 16:42:50 -0500 Received: from mga03.intel.com ([134.134.136.65]:13840 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726269AbfAXVmu (ORCPT ); Thu, 24 Jan 2019 16:42:50 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 24 Jan 2019 13:42:49 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,518,1539673200"; d="scan'208";a="109551314" Received: from dwillia2-desk3.jf.intel.com (HELO dwillia2-desk3.amr.corp.intel.com) ([10.54.39.16]) by orsmga007.jf.intel.com with ESMTP; 24 Jan 2019 13:42:49 -0800 Subject: [PATCH] device-dax: Auto-bind device after successful new_id From: Dan Williams To: linux-nvdimm@lists.01.org Cc: Alexander Duyck , Dave Hansen , linux-kernel@vger.kernel.org Date: Thu, 24 Jan 2019 13:30:12 -0800 Message-ID: <154836541248.2998916.14581880959768387544.stgit@dwillia2-desk3.amr.corp.intel.com> User-Agent: StGit/0.18-2-gc94f MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The typical 'new_id' attribute behavior is to immediately attach a device to its driver after a new device-id is added. Implement this behavior for the dax bus. Reported-by: Alexander Duyck Cc: Dave Hansen Signed-off-by: Dan Williams --- drivers/dax/bus.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c index c620ad52d7e5..7053ab6419db 100644 --- a/drivers/dax/bus.c +++ b/drivers/dax/bus.c @@ -92,7 +92,10 @@ static ssize_t do_id_store(struct device_driver *drv, const char *buf, } else /* dax_id already added */; mutex_unlock(&dax_bus_lock); - return rc; + + if (rc < 0) + return rc; + return driver_attach(drv); } static ssize_t new_id_store(struct device_driver *drv, const char *buf,