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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 92BD5C76192 for ; Thu, 18 Jul 2019 03:04:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6BAEC2173E for ; Thu, 18 Jul 2019 03:04:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563419087; bh=8qK39oZ1HwAVbPc5r9k4uxw2bpeMX8lNuXgpCkS2DGQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Tf0h7Fwx7R8ZPbbPg7/svysvQ6oeXxNP/MGw4YFx1FuvzuzqZhtD3doPM3yokWg9f 4UBBB+8S6vborodfTkXGhlbOv4dflQ/GZH3Jfgo0t0P96S14HnpkYItCSNEseQ69tJ uhKOHD/3p2naVg7Oorvf8dL/7jpu1jXOmB/vmdIY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389169AbfGRDEn (ORCPT ); Wed, 17 Jul 2019 23:04:43 -0400 Received: from mail.kernel.org ([198.145.29.99]:35644 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389055AbfGRDEm (ORCPT ); Wed, 17 Jul 2019 23:04:42 -0400 Received: from localhost (115.42.148.210.bf.2iij.net [210.148.42.115]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3CB542173B; Thu, 18 Jul 2019 03:04:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563419081; bh=8qK39oZ1HwAVbPc5r9k4uxw2bpeMX8lNuXgpCkS2DGQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jAOTPFwBtQs1GuKHQeYLWFgEy4gwKvEZ6zi/IsfqYWL0myRyvsbUS/frRjAhazpjB v1Ij6hJIodppclji91xJjQLP0h0z8Hp2af3epiT/IYGPJdMczkUzi7sBf1/KXO82dL 8HBFG8LTtt7mkgvOZCpUHZlXLI1Tvxfu1fQtKXKU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Guo Ren , Marc Zyngier , Sasha Levin Subject: [PATCH 5.1 09/54] irqchip/irq-csky-mpintc: Support auto irq deliver to all cpus Date: Thu, 18 Jul 2019 12:01:04 +0900 Message-Id: <20190718030054.082427622@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190718030053.287374640@linuxfoundation.org> References: <20190718030053.287374640@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org [ Upstream commit db56c5128e6625cb16efc4910b60627e46f608e3 ] The csky,mpintc could deliver a external irq to one cpu or all cpus, but it couldn't deliver a external irq to a group of cpus with cpu_mask. So we only use auto deliver mode when affinity mask_val is equal to cpu_present_mask. There is no limitation for only two cpus in SMP system. Signed-off-by: Guo Ren Cc: Marc Zyngier Signed-off-by: Marc Zyngier Signed-off-by: Sasha Levin --- drivers/irqchip/irq-csky-mpintc.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/irqchip/irq-csky-mpintc.c b/drivers/irqchip/irq-csky-mpintc.c index c67c961ab6cc..a4c1aacba1ff 100644 --- a/drivers/irqchip/irq-csky-mpintc.c +++ b/drivers/irqchip/irq-csky-mpintc.c @@ -89,8 +89,19 @@ static int csky_irq_set_affinity(struct irq_data *d, if (cpu >= nr_cpu_ids) return -EINVAL; - /* Enable interrupt destination */ - cpu |= BIT(31); + /* + * The csky,mpintc could support auto irq deliver, but it only + * could deliver external irq to one cpu or all cpus. So it + * doesn't support deliver external irq to a group of cpus + * with cpu_mask. + * SO we only use auto deliver mode when affinity mask_val is + * equal to cpu_present_mask. + * + */ + if (cpumask_equal(mask_val, cpu_present_mask)) + cpu = 0; + else + cpu |= BIT(31); writel_relaxed(cpu, INTCG_base + INTCG_CIDSTR + offset); -- 2.20.1