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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 34516C43460 for ; Fri, 9 Apr 2021 18:07:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0BF6061165 for ; Fri, 9 Apr 2021 18:07:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234576AbhDISHz (ORCPT ); Fri, 9 Apr 2021 14:07:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48174 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234470AbhDISHo (ORCPT ); Fri, 9 Apr 2021 14:07:44 -0400 Received: from mail-il1-x132.google.com (mail-il1-x132.google.com [IPv6:2607:f8b0:4864:20::132]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1F605C061764 for ; Fri, 9 Apr 2021 11:07:30 -0700 (PDT) Received: by mail-il1-x132.google.com with SMTP id n4so5413514ili.8 for ; Fri, 09 Apr 2021 11:07:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=M02HcZujpZ/J/h5ieItU4HENzz4/4ThjFxhYAjdjTos=; b=o1NsykK06oGHfrPp8sbmPR0E2noKbbC6+m22RUf8G7xP+9K879owrt1IiRZEwLAcxm uKhx5XXFzCPDVHgLqm7P6dh7zYR5Z0w8D26voQ6LFHC6nHjo9vQQvdDSXMSNIy4TzYy/ 2lV47wv1nN2quRJ8ZhqBZrGvJr4yJpHTtdYxVjaGnKDn3qjeHKuZNv2Y72fFWNBTo5+p iu1VIHv+R3AI9sCIN+3ColckgwWlbcPbzbU38Q3fasf83HrLOXGXGBtyBk7IuBC0A6Nj 1LhZcguacfNkijZ8v8RPRq6evcpn/YxtrksN6VIr6lJ2DQV8x/YVbG3nYNTp3iUGitKr va+Q== 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=M02HcZujpZ/J/h5ieItU4HENzz4/4ThjFxhYAjdjTos=; b=lcg/3WEm7AaFT8g/i9SM6i1qNSCOzcn6QnDJY1WCJ386KjshquNwFrU/NNTNIYYAV7 xgFjglDzIkVxzEJ4b+NbuJP/QUKpTUiQggKw5gH2FqU3sLt2Igdz/2N6gkHDqlom0TxI QIF89kQe8uVEmKrxHbh+Q25NES5x6aSqqTadg2Rjygy12ZXi5CDG7Rt5RpJ5sYbqgAp8 UKvriIy8oagkG+Ts0iQCBKnAqmKrC08TpmPVGoRjosivj3tydhrDKltzhYU4ZJU+N42n csybOujQyxxRxLkVy7Sr7E4OmBsHx6Az7ZwV/HR3efWjD60Nbz2Zy5gn0brF2cZTp40s U65Q== X-Gm-Message-State: AOAM5327bQsq4mL4PDCZJRTFpvdESWMMnvBXB/C1Gi769+APv874bWxm rr6PgOVEwKmZvk505xBhLQBdRA== X-Google-Smtp-Source: ABdhPJzZascuW/5o61qMj3tI9JnZqn2RqjUffIyvYqVEX4p1/fLg1hQ6KKaALUb1P9WirBIX1H14Xg== X-Received: by 2002:a05:6e02:1311:: with SMTP id g17mr12465813ilr.14.1617991649583; Fri, 09 Apr 2021 11:07:29 -0700 (PDT) Received: from presto.localdomain (c-73-185-129-58.hsd1.mn.comcast.net. [73.185.129.58]) by smtp.gmail.com with ESMTPSA id g12sm1412786ile.71.2021.04.09.11.07.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 Apr 2021 11:07:29 -0700 (PDT) From: Alex Elder To: davem@davemloft.net, kuba@kernel.org Cc: bjorn.andersson@linaro.org, evgreen@chromium.org, cpratapa@codeaurora.org, subashab@codeaurora.org, elder@kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next 4/7] net: ipa: ipa_stop() does not return an error Date: Fri, 9 Apr 2021 13:07:19 -0500 Message-Id: <20210409180722.1176868-5-elder@linaro.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210409180722.1176868-1-elder@linaro.org> References: <20210409180722.1176868-1-elder@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In ipa_modem_stop(), if the modem netdev pointer is non-null we call ipa_stop(). We check for an error and if one is returned we handle it. But ipa_stop() never returns an error, so this extra handling is unnecessary. Simplify the code in ipa_modem_stop() based on the knowledge no error handling is needed at this spot. Signed-off-by: Alex Elder --- drivers/net/ipa/ipa_modem.c | 18 ++++-------------- 1 file changed, 4 insertions(+), 14 deletions(-) diff --git a/drivers/net/ipa/ipa_modem.c b/drivers/net/ipa/ipa_modem.c index 8a6ccebde2889..af9aedbde717a 100644 --- a/drivers/net/ipa/ipa_modem.c +++ b/drivers/net/ipa/ipa_modem.c @@ -240,7 +240,6 @@ int ipa_modem_stop(struct ipa *ipa) { struct net_device *netdev = ipa->modem_netdev; enum ipa_modem_state state; - int ret; /* Only attempt to stop the modem if it's running */ state = atomic_cmpxchg(&ipa->modem_state, IPA_MODEM_STATE_RUNNING, @@ -257,29 +256,20 @@ int ipa_modem_stop(struct ipa *ipa) /* Prevent the modem from triggering a call to ipa_setup() */ ipa_smp2p_disable(ipa); + /* Stop the queue and disable the endpoints if it's open */ if (netdev) { - /* Stop the queue and disable the endpoints if it's open */ - ret = ipa_stop(netdev); - if (ret) - goto out_set_state; - + (void)ipa_stop(netdev); ipa->name_map[IPA_ENDPOINT_AP_MODEM_RX]->netdev = NULL; ipa->name_map[IPA_ENDPOINT_AP_MODEM_TX]->netdev = NULL; ipa->modem_netdev = NULL; unregister_netdev(netdev); free_netdev(netdev); - } else { - ret = 0; } -out_set_state: - if (ret) - atomic_set(&ipa->modem_state, IPA_MODEM_STATE_RUNNING); - else - atomic_set(&ipa->modem_state, IPA_MODEM_STATE_STOPPED); + atomic_set(&ipa->modem_state, IPA_MODEM_STATE_STOPPED); smp_mb__after_atomic(); - return ret; + return 0; } /* Treat a "clean" modem stop the same as a crash */ -- 2.27.0