From patchwork Thu Jul 6 02:28:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bibo Mao X-Patchwork-Id: 13303095 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A2455C0015E for ; Thu, 6 Jul 2023 02:28:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233302AbjGFC2z (ORCPT ); Wed, 5 Jul 2023 22:28:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39434 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229793AbjGFC2w (ORCPT ); Wed, 5 Jul 2023 22:28:52 -0400 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 7D7561995; Wed, 5 Jul 2023 19:28:51 -0700 (PDT) Received: from loongson.cn (unknown [10.2.9.158]) by gateway (Coremail) with SMTP id _____8AxCPLiJqZkGbQAAA--.3114S3; Thu, 06 Jul 2023 10:28:50 +0800 (CST) Received: from kvm-1-158.loongson.cn (unknown [10.2.9.158]) by localhost.localdomain (Coremail) with SMTP id AQAAf8AxjiPhJqZktK8dAA--.49030S3; Thu, 06 Jul 2023 10:28:49 +0800 (CST) From: Bibo Mao To: Huacai Chen , Jiaxun Yang , Marc Zyngier Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, Jianmin Lv , loongson-kernel@lists.loongnix.cn Subject: [PATCH v2 1/2] irqchip/loongson-eiointc: Fix return value checking of eiointc_index Date: Thu, 6 Jul 2023 10:28:48 +0800 Message-Id: <20230706022849.1272591-2-maobibo@loongson.cn> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20230706022849.1272591-1-maobibo@loongson.cn> References: <20230706022849.1272591-1-maobibo@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf8AxjiPhJqZktK8dAA--.49030S3 X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBj93XoW7tFW3Zr4DCFyfZF1fZr4kZrc_yoW8JFyUpF W3AFZFvr15Wa4xCrZrKF48JryYyws3t3y7tayxJay7XFs8J34DJr4rA3Z0yr10krW3uFy2 gF4rXFWUC3Z8AwcCm3ZEXasCq-sJn29KB7ZKAUJUUUUr529EdanIXcx71UUUUU7KY7ZEXa sCq-sGcSsGvfJ3Ic02F40EFcxC0VAKzVAqx4xG6I80ebIjqfuFe4nvWSU5nxnvy29KBjDU 0xBIdaVrnRJUUU9jb4IE77IF4wAFF20E14v26r1j6r4UM7CY07I20VC2zVCF04k26cxKx2 IYs7xG6rWj6s0DM7CIcVAFz4kK6r1Y6r17M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48v e4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_JFI_Gr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI 0_Gr0_Cr1l84ACjcxK6I8E87Iv67AKxVW8JVWxJwA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_ Gr0_Gr1UM2kKe7AKxVWUXVWUAwAS0I0E0xvYzxvE52x082IY62kv0487Mc804VCY07AIYI kI8VC2zVCFFI0UMc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWUAVWU twAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcxkI7VAKI4 8JMxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMxCIbckI1I0E14v26r1Y 6r17MI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7 AF67AKxVWUAVWUtwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1I6r4UMIIF0xvE 2Ix0cI8IcVCY1x0267AKxVWUJVW8JwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcV C2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2Kfnx nUUI43ZEXa7IU8q2NtUUUUU== Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org return value of function eiointc_index is int, however it is converted uint32_t when used. This causes logic problem when checking return value. There is eioi initial problem on qemu virt-machine where there is only one eioi node and more than 4 vcpus, external device intr can only be routed to vcpu 0-3. Signed-off-by: Bibo Mao --- drivers/irqchip/irq-loongson-eiointc.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/irqchip/irq-loongson-eiointc.c b/drivers/irqchip/irq-loongson-eiointc.c index 92d8aa28bdf5..1c5a5b59f199 100644 --- a/drivers/irqchip/irq-loongson-eiointc.c +++ b/drivers/irqchip/irq-loongson-eiointc.c @@ -144,12 +144,14 @@ static int eiointc_router_init(unsigned int cpu) int i, bit; uint32_t data; uint32_t node = cpu_to_eio_node(cpu); - uint32_t index = eiointc_index(node); + int index = eiointc_index(node); - if (index < 0) { - pr_err("Error: invalid nodemap!\n"); - return -1; - } + /* + * qemu virt-machine has only one eio intc and more than four cpus + * irq from eio can only be routed to cpu 0-3 on virt machine + */ + if (index < 0) + return 0; if ((cpu_logical_map(cpu) % CORES_PER_EIO_NODE) == 0) { eiointc_enable();