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=-8.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 B7F41C43444 for ; Tue, 8 Jan 2019 09:38:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7BC66206B7 for ; Tue, 8 Jan 2019 09:38:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=wdc.com header.i=@wdc.com header.b="eEPDgjS7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728576AbfAHJi4 (ORCPT ); Tue, 8 Jan 2019 04:38:56 -0500 Received: from esa5.hgst.iphmx.com ([216.71.153.144]:8878 "EHLO esa5.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728413AbfAHJit (ORCPT ); Tue, 8 Jan 2019 04:38:49 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1546940328; x=1578476328; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=bw1/Vq2gne9LAKNuyEBhQX+XTh+Fz0MdGc7HYnZ0izk=; b=eEPDgjS7mPcdMJtMOFXdfxbV5sYdEoysnHYQNYU5hMsS/PtpKmQOHOva LhEkFHz+maHoTJhr9DsTDWftleNIUWHs6klcT9L+M9+kAjnjNyfhDf3Xd 4kzteiD6Fvjh42newv6wYYWY+tUkfDLW1xfIlOvkCzlBklwqOXTRrUfWU xEpmaQAGgb9B9G3qeqWtRe8yWKID+NRPCltuLSF02tztTXm6j9HsTDOrb rqQL+NKw2BDYGbOwTB2cdO2v7U2wd00zcSzc4c7LIUCZsRKr+z9mXSZH7 IUOMHFxbMYINpiwPek2Fizmq1a7/qfu2VXvpOXUAbDuBkEIQ2W11yaiOm A==; X-IronPort-AV: E=Sophos;i="5.56,453,1539619200"; d="scan'208";a="99458414" Received: from h199-255-45-14.hgst.com (HELO uls-op-cesaep01.wdc.com) ([199.255.45.14]) by ob1.hgst.iphmx.com with ESMTP; 08 Jan 2019 17:38:48 +0800 Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep01.wdc.com with ESMTP; 08 Jan 2019 01:18:53 -0800 Received: from jedi-01.sdcorp.global.sandisk.com (HELO jedi-01.int.fusionio.com) ([10.11.143.218]) by uls-op-cesaip02.wdc.com with ESMTP; 08 Jan 2019 01:38:47 -0800 From: Atish Patra To: linux-riscv@lists.infradead.org Cc: Atish Patra , Alan Kao , Albert Ou , Andreas Schwab , Anup Patel , Daniel Lezcano , Dmitriy Cherkasov , Jason Cooper , linux-kernel@vger.kernel.org, Marc Zyngier , Michael Clark , Palmer Dabbelt , =?UTF-8?q?Patrick=20St=C3=A4hlin?= , Thomas Gleixner , Zong Li Subject: [PATCH v2 7/8] RISC-V: Check and continue in case of an invalid cpuid. Date: Tue, 8 Jan 2019 01:38:37 -0800 Message-Id: <1546940318-9752-8-git-send-email-atish.patra@wdc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1546940318-9752-1-git-send-email-atish.patra@wdc.com> References: <1546940318-9752-1-git-send-email-atish.patra@wdc.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org riscv_hartid_to_cpuid can return invalid cpuid for a hart that is present in DT but was never brought up. Print the appropriate warning message and continue. Signed-off-by: Atish Patra --- drivers/irqchip/irq-sifive-plic.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/irqchip/irq-sifive-plic.c b/drivers/irqchip/irq-sifive-plic.c index 357e9daf..254ecd76 100644 --- a/drivers/irqchip/irq-sifive-plic.c +++ b/drivers/irqchip/irq-sifive-plic.c @@ -237,6 +237,11 @@ static int __init plic_init(struct device_node *node, } cpu = riscv_hartid_to_cpuid(hartid); + if (cpu < 0) { + pr_warn("Invalid cpuid for context %d\n", i); + continue; + } + handler = per_cpu_ptr(&plic_handlers, cpu); handler->present = true; handler->ctxid = i; -- 2.7.4