From patchwork Tue Apr 30 14:24:19 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 13649389 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 74D66C4345F for ; Tue, 30 Apr 2024 14:26:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=wUbLto9qyub1+X4VAR+96d5HnhUpmHgTzRTDTCbbf4k=; b=dzEGvue9y10KIV bqadGYZ/p3OItgDwmo3t7qfyjfSptIDSqmPivY00XrOMpXUGGQeQ3gF1P8/4FaSIqNQjbiwDvxWY5 I7XL6JlEh4d3PangB6TOqRTFtoqtkFSno8IH2LKsdhXHtX80rdmNXLRpqaQNHNurmsmHUo+h6I8pZ HMXwXh6KUSa7pzTTf5ioUX7AHEJTNlSWa+lasMnyu6aHjqgaisXPgSi8zs8zkoJx/QprI8EPVT8vz 56FLnJdUZvcIX739cpF/hY23Xz3KbNXoVX+yigQYvIeh3xjEL6ByCuAZ3HRohkXwrhYXqVuhd41dU WZ8HNyn2IfeElLfgwxnQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1s1oRQ-00000006nwv-3qW2; Tue, 30 Apr 2024 14:26:44 +0000 Received: from frasgout.his.huawei.com ([185.176.79.56]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1s1oRN-00000006nux-0Utq for linux-arm-kernel@lists.infradead.org; Tue, 30 Apr 2024 14:26:43 +0000 Received: from mail.maildlp.com (unknown [172.18.186.231]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4VTMvK1bnTz6DB5S; Tue, 30 Apr 2024 22:26:21 +0800 (CST) Received: from lhrpeml500005.china.huawei.com (unknown [7.191.163.240]) by mail.maildlp.com (Postfix) with ESMTPS id 47CF4140A08; Tue, 30 Apr 2024 22:26:39 +0800 (CST) Received: from SecurePC-101-06.china.huawei.com (10.122.247.231) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.35; Tue, 30 Apr 2024 15:26:38 +0100 From: Jonathan Cameron To: Thomas Gleixner , Peter Zijlstra , , , , , , , , , Russell King , "Rafael J . Wysocki" , Miguel Luis , James Morse , Salil Mehta , Jean-Philippe Brucker , Catalin Marinas , Will Deacon , Marc Zyngier , Hanjun Guo , Gavin Shan CC: Ingo Molnar , Borislav Petkov , Dave Hansen , , , Subject: [PATCH v9 04/19] ACPI: processor: Return an error if acpi_processor_get_info() fails in processor_add() Date: Tue, 30 Apr 2024 15:24:19 +0100 Message-ID: <20240430142434.10471-5-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240430142434.10471-1-Jonathan.Cameron@huawei.com> References: <20240430142434.10471-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhrpeml100003.china.huawei.com (7.191.160.210) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240430_072641_500099_54655C24 X-CRM114-Status: GOOD ( 14.55 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Rafael observed [1] that returning 0 from processor_add() will result in acpi_default_enumeration() being called which will attempt to create a platform device, but that makes little sense when the processor is known to be not available. So just return the error code from acpi_processor_get_info() instead. Link: https://lore.kernel.org/all/CAJZ5v0iKU8ra9jR+EmgxbuNm=Uwx2m1-8vn_RAZ+aCiUVLe3Pw@mail.gmail.com/ [1] Suggested-by: Rafael J. Wysocki Signed-off-by: Jonathan Cameron Reviewed-by: Gavin Shan Acked-by: Rafael J. Wysocki --- v9: New patch following through from Gavin pointing out a memory leak later in the series. --- drivers/acpi/acpi_processor.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c index 161c95c9d60a..5f062806ca40 100644 --- a/drivers/acpi/acpi_processor.c +++ b/drivers/acpi/acpi_processor.c @@ -393,7 +393,7 @@ static int acpi_processor_add(struct acpi_device *device, result = acpi_processor_get_info(device); if (result) /* Processor is not physically present or unavailable */ - return 0; + return result; BUG_ON(pr->id >= nr_cpu_ids);