From patchwork Thu May 20 14:09:25 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Scally X-Patchwork-Id: 443580 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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 D8222C43603 for ; Thu, 20 May 2021 14:12:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C09086109F for ; Thu, 20 May 2021 14:12:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242441AbhETONZ (ORCPT ); Thu, 20 May 2021 10:13:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50982 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236832AbhETOMi (ORCPT ); Thu, 20 May 2021 10:12:38 -0400 Received: from mail-wr1-x429.google.com (mail-wr1-x429.google.com [IPv6:2a00:1450:4864:20::429]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BD486C061361; Thu, 20 May 2021 07:09:47 -0700 (PDT) Received: by mail-wr1-x429.google.com with SMTP id n2so17908807wrm.0; Thu, 20 May 2021 07:09:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=hrezTbeUnB44Jq8jpE0EGXBBC95jZc3BI1HpgJHuc3E=; b=BG5z9OHjJtE6foNzs9KvYI1znXuHbxzHT64Zex9Nz+9NOk8AjDerA27cgft8+C5VGU uNR8qNNanJTfGWhRW22zobrqtwT9cP4cJbYxeO+aUmFKE5hwoVin8pYm4C6oAtAq0xS/ wNZ4eWgCuVeufDV3AqtWSItVjV3JfiD99WXVN4uMG6qkTt2jUqZZzuGjBBwMcQAeFKYz m5svFHE4c1LDShvqZlOpeu7jVAbpN5T0NE2yh2otyWRsLavqkG82K0SHtBgWHFArD7dJ HS/RakkufSBC219eztgN/IF7x36MKLBolqxh00XWnVSY2rdwb3ELYrdbdT9RfQSLO0Yb UBag== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=hrezTbeUnB44Jq8jpE0EGXBBC95jZc3BI1HpgJHuc3E=; b=Cv7XQ5+G5rmEE8puWJocTviVf2rU7/UkHmYsH+jQymRBv77vNDxq8w58TG5avstDdP QfwMb0a28nNeN8Od29YkxrmfC2jDAGMg+HDeGhRiY5EbXs//kWNQ/3X764YPLMTl5XU/ DCNHopuwAdAG/flAoXZQhp6f+Ax+fYxeCDlw9jpOA/ViEV41eMNzSHORV5L5RT27CtnZ n/0p1HuCdYDpRSSMzFEjRrnq7UPCHJM9/z0ORqsuWDwRzRIldWMGBbZn456mzD2jWY/8 YCgpVHYn9PpMXYBmGarHVtjXqdCU8RMQhCdt4J22i/9vQP2tqd5cR09zMvcdwAxO5Z0f GkFA== X-Gm-Message-State: AOAM532JV5sOtrInw+OZIp7UsRpdJWXmIzfBum+oe6bnFrFpnIXBNdf+ 7hSQcyDEHF1n6q0QR37rLh4= X-Google-Smtp-Source: ABdhPJwswwszza5NkAZ5hZyeTl1MTHiFRi+v733q3DYJ/IwTZdIlc9YEpMz3KP/YH/J/48X31p6qfQ== X-Received: by 2002:adf:9c8e:: with SMTP id d14mr4719995wre.140.1621519786437; Thu, 20 May 2021 07:09:46 -0700 (PDT) Received: from valhalla.home ([91.110.20.117]) by smtp.gmail.com with ESMTPSA id m6sm8411974wml.3.2021.05.20.07.09.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 May 2021 07:09:46 -0700 (PDT) From: Daniel Scally To: "Rafael J . Wysocki" , Andy Shevchenko , Daniel Scally , Wolfram Sang , Lee Jones , Hans de Goede , Maximilian Luz , linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-gpio@vger.kernel.org, linux-i2c@vger.kernel.org, platform-driver-x86@vger.kernel.org, devel@acpica.org Cc: Len Brown , Mika Westerberg , Russell King , Linus Walleij , Bartosz Golaszewski , Mark Gross , Robert Moore , Erik Kaneda , laurent.pinchart@ideasonboard.com, kieran.bingham@ideasonboard.com Subject: [PATCH v4 5/8] clkdev: Make clkdev_drop() null aware Date: Thu, 20 May 2021 15:09:25 +0100 Message-Id: <20210520140928.3252671-6-djrscally@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210520140928.3252671-1-djrscally@gmail.com> References: <20210520140928.3252671-1-djrscally@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org To simplify error handling paths, many functions are no-ops when passed NULL pointers, for example gpiod_remove_lookup_table(). Mirror that behaviour for clkdev_drop(). Signed-off-by: Daniel Scally --- Changes since v3: - Patch introduced drivers/clk/clkdev.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/clk/clkdev.c b/drivers/clk/clkdev.c index 0f2e3fcf0f19..c082720f8ade 100644 --- a/drivers/clk/clkdev.c +++ b/drivers/clk/clkdev.c @@ -286,6 +286,9 @@ EXPORT_SYMBOL(clk_add_alias); */ void clkdev_drop(struct clk_lookup *cl) { + if (!cl) + return; + mutex_lock(&clocks_mutex); list_del(&cl->node); mutex_unlock(&clocks_mutex);