From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 05 Jun 2023 08:30:51 +0200 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1q63jx-00BRvD-2F for lore@lore.pengutronix.de; Mon, 05 Jun 2023 08:30:51 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1q63ju-0002gq-FO for lore@pengutronix.de; Mon, 05 Jun 2023 08:30:51 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=dTLqQ/aRUVHWnRWCMp+22JKZWwNRfzjgo/bc5biw/7M=; b=U3XKVqqGXwZNbqypXSbbHdqD0a xmaXaD3k4eRvYPs+Ninv2/86F24wy5F79fXUxjEcUAzyBaavs8rjWhoWlTTgi7tLTsMn4j54PcKQK z0Z0Xwgj1XqYP2ii4GaCKCX+wQosS2055uLdcVtj5qarjbazeePI4/gdS0247keAm7vhFlCl3UNQw g9VXUyDWdWQuPHRVRIpPx+4OAWfxTVhrBG3vRW+pkt30Q1PhhTS1GRLgnmgDfRtI27d7qGX1a1xdE tiNwv/SuTkt42q+4iMaNgVRtf3t0CibtevUJTIAhd7qALPma5Y45GBYEDdLcct24lESfb4mPQkAol CiVxda0w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1q63is-00ELhM-1m; Mon, 05 Jun 2023 06:29:46 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1q63ip-00ELex-2L for barebox@lists.infradead.org; Mon, 05 Jun 2023 06:29:44 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1q63io-00024T-Da; Mon, 05 Jun 2023 08:29:42 +0200 Received: from [2a0a:edc0:0:1101:1d::54] (helo=dude05.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1q63in-005Cpb-My; Mon, 05 Jun 2023 08:29:41 +0200 Received: from afa by dude05.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1q63im-001C2s-QX; Mon, 05 Jun 2023 08:29:40 +0200 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Ahmad Fatoum Date: Mon, 5 Jun 2023 08:29:38 +0200 Message-Id: <20230605062939.242063-6-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230605062939.242063-1-a.fatoum@pengutronix.de> References: <20230605062939.242063-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230604_232943_769022_475E0CBA X-CRM114-Status: UNSURE ( 9.16 ) X-CRM114-Notice: Please train this message. X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.9 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE, T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH master 6/7] MIPS: longsoon: restart: hide access to zero page X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) Watchdog on Longsoon appears to be at address 0. Let's use OPTIMIZER_HIDE_VAR, so GCC doesn't warn about it. Signed-off-by: Ahmad Fatoum --- arch/mips/mach-loongson/loongson1_reset.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/arch/mips/mach-loongson/loongson1_reset.c b/arch/mips/mach-loongson/loongson1_reset.c index 85752f4ab825..9b4da217f80d 100644 --- a/arch/mips/mach-loongson/loongson1_reset.c +++ b/arch/mips/mach-loongson/loongson1_reset.c @@ -11,9 +11,13 @@ static void __noreturn longhorn_restart_soc(struct restart_handler *rst) { - __raw_writel(0x1, WDT_EN); - __raw_writel(0x1, WDT_SET); - __raw_writel(0x1, WDT_TIMER); + void __iomem *wdt = IOMEM(0); + + OPTIMIZER_HIDE_VAR(wdt); + + __raw_writel(0x1, wdt + WDT_EN); + __raw_writel(0x1, wdt + WDT_SET); + __raw_writel(0x1, wdt + WDT_TIMER); hang(); } -- 2.39.2