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=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 E8DA5C0650F for ; Mon, 5 Aug 2019 13:09:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BF2EE2075B for ; Mon, 5 Aug 2019 13:09:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1565010546; bh=f1WaR3tSARaSVDFRiJ7S+mftWy4gyhuDPSgOpNyxiVI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=BmBvVH/zX9bz3KLpqg27dtKa2Z97Y9pG9LwYlSHFW8h+j3zDOM0On7paRJm0mfGDk E9l6cX3pGw+2T44/2HPupZI9yMXDjle3LSIggniHpawlikgu+ekm1Pw6W48WlbNGp9 RsR5DHfjNC+7fYwQ5legL+cbNZYj2/bIm6kgSEy0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730132AbfHENJF (ORCPT ); Mon, 5 Aug 2019 09:09:05 -0400 Received: from mail.kernel.org ([198.145.29.99]:47324 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730121AbfHENJB (ORCPT ); Mon, 5 Aug 2019 09:09:01 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (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 4E3BE2067D; Mon, 5 Aug 2019 13:09:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1565010540; bh=f1WaR3tSARaSVDFRiJ7S+mftWy4gyhuDPSgOpNyxiVI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ecGrG6MdpgvScpyRC2+yinDYz1NQlECQyBbiYtg7dJdurr6soSJd0nZourFB1MXlh qfP8yZ1DTBIEAfMnzxNvnKuHVKf34QYmBJAXuPw9/hYnpzeAkagv5a/w4k++4tz2Gd lOrB6hIWeqaGaxTWhzb4evvtszTd5RVjI8sVcNBE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Petr Cvek , Paul Burton , hauke@hauke-m.de, john@phrozen.org, linux-mips@vger.kernel.org, openwrt-devel@lists.openwrt.org, pakahmar@hotmail.com, Sasha Levin Subject: [PATCH 4.19 10/74] MIPS: lantiq: Fix bitfield masking Date: Mon, 5 Aug 2019 15:02:23 +0200 Message-Id: <20190805124936.628894906@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190805124935.819068648@linuxfoundation.org> References: <20190805124935.819068648@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org [ Upstream commit ba1bc0fcdeaf3bf583c1517bd2e3e29cf223c969 ] The modification of EXIN register doesn't clean the bitfield before the writing of a new value. After a few modifications the bitfield would accumulate only '1's. Signed-off-by: Petr Cvek Signed-off-by: Paul Burton Cc: hauke@hauke-m.de Cc: john@phrozen.org Cc: linux-mips@vger.kernel.org Cc: openwrt-devel@lists.openwrt.org Cc: pakahmar@hotmail.com Signed-off-by: Sasha Levin --- arch/mips/lantiq/irq.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/mips/lantiq/irq.c b/arch/mips/lantiq/irq.c index c4ef1c31e0c4f..37caeadb2964c 100644 --- a/arch/mips/lantiq/irq.c +++ b/arch/mips/lantiq/irq.c @@ -156,8 +156,9 @@ static int ltq_eiu_settype(struct irq_data *d, unsigned int type) if (edge) irq_set_handler(d->hwirq, handle_edge_irq); - ltq_eiu_w32(ltq_eiu_r32(LTQ_EIU_EXIN_C) | - (val << (i * 4)), LTQ_EIU_EXIN_C); + ltq_eiu_w32((ltq_eiu_r32(LTQ_EIU_EXIN_C) & + (~(7 << (i * 4)))) | (val << (i * 4)), + LTQ_EIU_EXIN_C); } } -- 2.20.1