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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 1F62AC433DB for ; Thu, 18 Mar 2021 07:40:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D80DB64F24 for ; Thu, 18 Mar 2021 07:40:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229749AbhCRHkO (ORCPT ); Thu, 18 Mar 2021 03:40:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51004 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229558AbhCRHj5 (ORCPT ); Thu, 18 Mar 2021 03:39:57 -0400 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 94919C06174A for ; Thu, 18 Mar 2021 00:39:57 -0700 (PDT) Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lMnG5-0008Ne-SK; Thu, 18 Mar 2021 08:39:53 +0100 Received: from afa by dude.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1lMnG5-0003Qr-9v; Thu, 18 Mar 2021 08:39:53 +0100 From: Ahmad Fatoum To: Greg Kroah-Hartman , "Rafael J. Wysocki" Cc: kernel@pengutronix.de, Andrzej Hajda , Ahmad Fatoum , linux-kernel@vger.kernel.org Subject: [PATCH 2/2] driver core: add helper for deferred probe reason setting Date: Thu, 18 Mar 2021 08:39:20 +0100 Message-Id: <20210318073921.13093-2-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210318073921.13093-1-a.fatoum@pengutronix.de> References: <20210318073921.13093-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: afa@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We now have three places within the same file doing the same operation of freeing this pointer and setting it anew. A helper make this arguably easier to read, so add one. Signed-off-by: Ahmad Fatoum --- drivers/base/dd.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/base/dd.c b/drivers/base/dd.c index e2cf3b29123e..4201baa1cc13 100644 --- a/drivers/base/dd.c +++ b/drivers/base/dd.c @@ -69,6 +69,12 @@ static char async_probe_drv_names[ASYNC_DRV_NAMES_MAX_LEN]; */ static bool defer_all_probes; +static void __device_set_deferred_probe_reason(const struct device *dev, char *reason) +{ + kfree(dev->p->deferred_probe_reason); + dev->p->deferred_probe_reason = reason; +} + /* * deferred_probe_work_func() - Retry probing devices in the active list. */ @@ -97,8 +103,7 @@ static void deferred_probe_work_func(struct work_struct *work) get_device(dev); - kfree(dev->p->deferred_probe_reason); - dev->p->deferred_probe_reason = NULL; + __device_set_deferred_probe_reason(dev, NULL); /* * Drop the mutex while probing each device; the probe path may @@ -140,8 +145,7 @@ void driver_deferred_probe_del(struct device *dev) if (!list_empty(&dev->p->deferred_probe)) { dev_dbg(dev, "Removed from deferred list\n"); list_del_init(&dev->p->deferred_probe); - kfree(dev->p->deferred_probe_reason); - dev->p->deferred_probe_reason = NULL; + __device_set_deferred_probe_reason(dev, NULL); } mutex_unlock(&deferred_probe_mutex); } @@ -220,11 +224,12 @@ void device_unblock_probing(void) void device_set_deferred_probe_reason(const struct device *dev, struct va_format *vaf) { const char *drv = dev_driver_string(dev); + char *reason; mutex_lock(&deferred_probe_mutex); - kfree(dev->p->deferred_probe_reason); - dev->p->deferred_probe_reason = kasprintf(GFP_KERNEL, "%s: %pV", drv, vaf); + reason = kasprintf(GFP_KERNEL, "%s: %pV", drv, vaf); + __device_set_deferred_probe_reason(dev, reason); mutex_unlock(&deferred_probe_mutex); } -- 2.29.2