From patchwork Wed Dec 29 07:57:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ani Sinha X-Patchwork-Id: 12700787 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 28E65C433F5 for ; Wed, 29 Dec 2021 07:59:17 +0000 (UTC) Received: from localhost ([::1]:45342 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1n2Trf-0003sE-PC for qemu-devel@archiver.kernel.org; Wed, 29 Dec 2021 02:59:15 -0500 Received: from eggs.gnu.org ([209.51.188.92]:48880) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1n2Tqi-0003Bs-5d for qemu-devel@nongnu.org; Wed, 29 Dec 2021 02:58:16 -0500 Received: from [2607:f8b0:4864:20::62c] (port=36860 helo=mail-pl1-x62c.google.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1n2Tqg-0000dv-Ev for qemu-devel@nongnu.org; Wed, 29 Dec 2021 02:58:15 -0500 Received: by mail-pl1-x62c.google.com with SMTP id p14so15349843plf.3 for ; Tue, 28 Dec 2021 23:58:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=anisinha-ca.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id; bh=tIWSwSdlTmlnUWR+2oEQe/x0cST0/CfeY0dvfaKO4+Y=; b=TmZyO4L2GYLgkebkfvdlyu6U/q7VTmKqhO4FopeP1efwBdmBkhJhvzu8Mt26q/+94g 5AimEJ7I3NyK+Kff8NY3/QiCj01yrTTSF33SRwUoM4b3Lsv1pDLJZCn6bAYOmZy0vzpf OYa64c8rJc9amV680pbaUw0uLxcb0tlczN49yE2MqsSeAOlg+BglOvauR+evDM9iLG3c RmtH5ZOmBqQG0vaSCFysojl5wwvf5DSk6e6vPtmHvRVpSFGX3dqVOrrMLNUkG7DQ1RD1 FAlC1FTrxVSLkyrfsxQW0QlFd6jxMTcnm4iW3+sUyj566xPgLP4eTN5bd0W7j1cMv7ej vjTg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=tIWSwSdlTmlnUWR+2oEQe/x0cST0/CfeY0dvfaKO4+Y=; b=sUIyAdztNPh/4iUFeIPQ5SLaa8bBMk4sMC34PwsNju/YCp88KJ/KC2iLj9KmAoMgMT rTuUNzyklgVIZv9IqsQavfE7wXdDMclNLHTtIEpNiNrTtiMZnKaRN1OIx5Gppn3DxjZs RzTRBtnThHpB4qeK3iHY4tccm08D/2pmQlEmeD8Ch+6SSqIdE/B5n01hiLzf3UCKgEaJ iAr3882xMaKphIcoh/l8fSGHxvbUTKQo3pihGbUMUNqMj00U7ab5h5+uurHiGMFVqbHs eA1k3v0z0gcNBDX8PfGbKOXa4lMD5e1ZHMwIBl9Ox0xm5vmDb9F1PusM1glLy4LgeMu2 BW3w== X-Gm-Message-State: AOAM531zUSz/inRDBeXdSDIIyn/JINfUW4Rk5fVH3NIOYX6YRxpg7hYN GirOepZghwaiZ0S2KqprCtC/tA== X-Google-Smtp-Source: ABdhPJwW85JJ04K57WUz5P3MNMLZX0wSLC8AkU7L7eND+sRSpVBO/XVC3I2iMYGhoGL5IGjoB/+kxg== X-Received: by 2002:a17:903:281:b0:148:a3f4:1ec4 with SMTP id j1-20020a170903028100b00148a3f41ec4mr25220936plr.158.1640764692237; Tue, 28 Dec 2021 23:58:12 -0800 (PST) Received: from localhost.localdomain ([203.163.235.52]) by smtp.googlemail.com with ESMTPSA id w6sm757334pga.25.2021.12.28.23.58.09 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 28 Dec 2021 23:58:11 -0800 (PST) From: Anirban Sinha X-Google-Original-From: Anirban Sinha To: "Michael S. Tsirkin" , Igor Mammedov , Ani Sinha Subject: [PATCH] acpihp: simplify acpi_pcihp_disable_root_bus Date: Wed, 29 Dec 2021 13:27:53 +0530 Message-Id: <1640764674-7784-1-git-send-email-ani@anirban.org> X-Mailer: git-send-email 2.6.3 X-Host-Lookup-Failed: Reverse DNS lookup failed for 2607:f8b0:4864:20::62c (failed) Received-SPF: none client-ip=2607:f8b0:4864:20::62c; envelope-from=ani@anisinha.ca; helo=mail-pl1-x62c.google.com X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Ani Sinha Get rid of the static variable that keeps track of whether hotplug has been disabled on the root pci bus. Simply use qbus_is_hotpluggable() api to perform the same check. This eliminates additional if conditional and simplifies the function. Signed-off-by: Ani Sinha --- hw/acpi/pcihp.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/hw/acpi/pcihp.c b/hw/acpi/pcihp.c index 30405b5113..e497f66ff6 100644 --- a/hw/acpi/pcihp.c +++ b/hw/acpi/pcihp.c @@ -128,20 +128,15 @@ static void acpi_set_pci_info(void) static void acpi_pcihp_disable_root_bus(void) { - static bool root_hp_disabled; Object *host = acpi_get_i386_pci_host(); PCIBus *bus; - if (root_hp_disabled) { - return; - } - bus = PCI_HOST_BRIDGE(host)->bus; - if (bus) { + if (bus && qbus_is_hotpluggable(BUS(bus))) { /* setting the hotplug handler to NULL makes the bus non-hotpluggable */ qbus_set_hotplug_handler(BUS(bus), NULL); } - root_hp_disabled = true; + return; }