From nobody Fri May 8 08:22:56 2026 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 206A2C433FE for ; Sat, 7 May 2022 01:34:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1445193AbiEGBiZ (ORCPT ); Fri, 6 May 2022 21:38:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54458 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236028AbiEGBiW (ORCPT ); Fri, 6 May 2022 21:38:22 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 958265F25D for ; Fri, 6 May 2022 18:34:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1651887276; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=vncVoL2JhBNKljKiob7OIeoa3sEmbpg073822r/dh9w=; b=VbH7BuufTxDCXdiSmb3llf0EXpmP+7icFWMcIHrHunjAn5q5kBuS6yIxuFdNk6Cidar384 PBWWx//APkbZeWu2rj9f+vcM2V2WwIeNoLQ4WWWjVZDyln7EcNhU9dOjt6PA2xC5gqX6xx 1GsQVAAyyeRV6UOZM0nHkpFCBDsj95g= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-245-qAWFsuJSNgSMVyTzlT0U4Q-1; Fri, 06 May 2022 21:34:21 -0400 X-MC-Unique: qAWFsuJSNgSMVyTzlT0U4Q-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id D3E3B2999B5B; Sat, 7 May 2022 01:34:20 +0000 (UTC) Received: from MiWiFi-R3L-srv.redhat.com (ovpn-13-18.pek2.redhat.com [10.72.13.18]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2B34E40D2971; Sat, 7 May 2022 01:34:15 +0000 (UTC) From: Baoquan He To: ysato@users.sourceforge.jp, dalias@libc.org Cc: linux-sh@vger.kernel.org, bhe@redhat.com, linux-kernel@vger.kernel.org, kernel test robot Subject: [PATCH] sh: cast away __iomem to remove sparse warning Date: Sat, 7 May 2022 09:34:11 +0800 Message-Id: <20220507013411.74277-1-bhe@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.84 on 10.11.54.2 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" LKP reported a sparse warning in arch/sh/kernel/crash_dump.c during a kdump patchset reviewing: https://lore.kernel.org/all/202204082128.JKXXDGpa-lkp@intel.com/T/#u ../arch/sh/kernel/crash_dump.c:23:36: sparse: warning: incorrect type in ar= gument 1 (different address spaces) ../arch/sh/kernel/crash_dump.c:23:36: sparse: expected void const *addr ../arch/sh/kernel/crash_dump.c:23:36: sparse: got void [noderef] __iomem= * This warning happened when __iomem pointer is passed into fucntion which doesn't expect it. Casting away the __iomem can fix it. Reported-by: kernel test robot Signed-off-by: Baoquan He Tested-by: Rob Landley --- arch/sh/kernel/crash_dump.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/sh/kernel/crash_dump.c b/arch/sh/kernel/crash_dump.c index 19ce6a950aac..52d1d54eb6b1 100644 --- a/arch/sh/kernel/crash_dump.c +++ b/arch/sh/kernel/crash_dump.c @@ -20,7 +20,7 @@ ssize_t copy_oldmem_page(struct iov_iter *iter, unsigned = long pfn, return 0; =20 vaddr =3D ioremap(pfn << PAGE_SHIFT, PAGE_SIZE); - csize =3D copy_to_iter(vaddr + offset, csize, iter); + csize =3D copy_to_iter((const void __force *)vaddr + offset, csize, iter); iounmap(vaddr); =20 return csize; --=20 2.34.1