From patchwork Thu Oct 3 15:53:00 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 11172803 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6B4A576 for ; Thu, 3 Oct 2019 16:02:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 48B1E222C4 for ; Thu, 3 Oct 2019 16:02:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570118570; bh=wHqDZJIituYx9y3q6KEtPRBcqok4mbWdkHwToUoZq6o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=RTCZKji6k9Fa5hqf9LWY/HaNA7eBRDrh5DTtGVEAWPe/sRZ1AlYNbCmw/1shu/Eq7 sD+Ds8pb8Cotr4zlWFPyasS5wk8JP1xmvzD3u3Emtruxp4MHmWNojQ5xlIqLh581nG RXG31VpMiIuBS5aqmdACrYiXckXWqVPJyr8XE33c= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732065AbfJCQCt (ORCPT ); Thu, 3 Oct 2019 12:02:49 -0400 Received: from mail.kernel.org ([198.145.29.99]:47798 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729741AbfJCQCr (ORCPT ); Thu, 3 Oct 2019 12:02:47 -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 3272120700; Thu, 3 Oct 2019 16:02:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570118566; bh=wHqDZJIituYx9y3q6KEtPRBcqok4mbWdkHwToUoZq6o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cMsc8h4Vzd9j1C0UnpLmP6HSEGQhWB5eaQ7hpoCgRCuxxjmwULmJUXsHyDMg785XM Je1DKZaAIokNE7R2HtSKOGPeWTSWYWCYMXrEw01+rN21ZsPOYKJQy3ab8nrfhLV+/7 eWsHKS0jY5pxMeX17FO3zJHf5Vk2Irpe4Th8Gh4o= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dan Carpenter , Borislav Petkov , Thor Thayer , James Morse , kernel-janitors@vger.kernel.org, linux-edac , Mauro Carvalho Chehab , Tony Luck , Sasha Levin Subject: [PATCH 4.9 057/129] EDAC/altera: Use the proper type for the IRQ status bits Date: Thu, 3 Oct 2019 17:53:00 +0200 Message-Id: <20191003154344.255520786@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191003154318.081116689@linuxfoundation.org> References: <20191003154318.081116689@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: linux-edac-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-edac@vger.kernel.org From: Dan Carpenter [ Upstream commit 8faa1cf6ed82f33009f63986c3776cc48af1b7b2 ] Smatch complains about the cast of a u32 pointer to unsigned long: drivers/edac/altera_edac.c:1878 altr_edac_a10_irq_handler() warn: passing casted pointer '&irq_status' to 'find_first_bit()' This code wouldn't work on a 64 bit big endian system because it would read past the end of &irq_status. [ bp: massage. ] Fixes: 13ab8448d2c9 ("EDAC, altera: Add ECC Manager IRQ controller support") Signed-off-by: Dan Carpenter Signed-off-by: Borislav Petkov Reviewed-by: Thor Thayer Cc: James Morse Cc: kernel-janitors@vger.kernel.org Cc: linux-edac Cc: Mauro Carvalho Chehab Cc: Tony Luck Link: https://lkml.kernel.org/r/20190624134717.GA1754@mwanda Signed-off-by: Sasha Levin --- drivers/edac/altera_edac.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/edac/altera_edac.c b/drivers/edac/altera_edac.c index b0bd0f64d8f21..6037efa94c9ba 100644 --- a/drivers/edac/altera_edac.c +++ b/drivers/edac/altera_edac.c @@ -1651,6 +1651,7 @@ static void altr_edac_a10_irq_handler(struct irq_desc *desc) struct altr_arria10_edac *edac = irq_desc_get_handler_data(desc); struct irq_chip *chip = irq_desc_get_chip(desc); int irq = irq_desc_get_irq(desc); + unsigned long bits; dberr = (irq == edac->db_irq) ? 1 : 0; sm_offset = dberr ? A10_SYSMGR_ECC_INTSTAT_DERR_OFST : @@ -1660,7 +1661,8 @@ static void altr_edac_a10_irq_handler(struct irq_desc *desc) regmap_read(edac->ecc_mgr_map, sm_offset, &irq_status); - for_each_set_bit(bit, (unsigned long *)&irq_status, 32) { + bits = irq_status; + for_each_set_bit(bit, &bits, 32) { irq = irq_linear_revmap(edac->domain, dberr * 32 + bit); if (irq) generic_handle_irq(irq);