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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CB9DCC3ABC0 for ; Tue, 6 May 2025 01:00:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=lz/nlejT6PzPAuFEghLzplkeFQxWIkplDivTcTqt1uQ=; b=TsgsRA3zqO35jU SzAyKoRTPbJYx2mUIY0njRe14huQmKQj0KA2Se+nNWWCObfdTrBKiiwsE89tY7kplXIJp9G7fwcZv Fi6HtYcx88e0kZNPimGVAwrxzd7qnCbNaizLzbXAEjoGaIqErOQbIIhOakL+lOA3rn4tKedP2qRgf +/4e6JnVljiz8zOQ90Pkly6bIlASHFHE6Jh/lqkS/JJMju1wM3EMiafiENB490uJHAazBebnhuCy2 WcEqZC2TIxgMYKas/elU6FKjM58lFpI9G9Uoklx1QClB1EoANBNjATUgi2EJTBMhvql6Jo79nNYe8 u6UABjl66AgKjrcds4bA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uC6fG-00000009PhJ-19lE; Tue, 06 May 2025 01:00:06 +0000 Received: from nyc.source.kernel.org ([147.75.193.91]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uC4Vz-00000008pzx-3x4E for linux-riscv@lists.infradead.org; Mon, 05 May 2025 22:42:28 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 993D8A4D028; Mon, 5 May 2025 22:36:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A69BCC4CEEE; Mon, 5 May 2025 22:42:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746484942; bh=NWrCB9QKWE9LHJw3TZ6TiMGktRwEOC/Vp74f1sAzblg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pSE+zTCjLJlGfk8mItOdo+seOCE5rZTTvX/I6wR9XZQzOjOfIu12FVeJhyqeb3Nm1 rIg+ePm9hK2EScULUM18mnrgCkC2X2IYbK50U9YKMgG6ElxTQhNieYQ4KG81Am4geO yel+AXewG28Dk/3vWWYxnALPe2aj4h3YRe5i+DRpSK2O8jr1insaNbC1eXG+5Ooupj YsS5z0M7YZ27QGzZxVZWc1r8wFksvzzhg1VJ69nL9qHStTjYfvCSZoLf1OiiYYlPc3 83xqtuyY/E9qbFRheIRWsaURDk4iJSSwWXBb9YYD3xqkpc18fD6BJHXK1jqPhdX4Yx zVr7fp1EEK9dA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Nick Hu , Anup Patel , Daniel Lezcano , Alexandre Ghiti , Sasha Levin , tglx@linutronix.de, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, linux-riscv@lists.infradead.org Subject: [PATCH AUTOSEL 6.12 088/486] clocksource/drivers/timer-riscv: Stop stimecmp when cpu hotplug Date: Mon, 5 May 2025 18:32:44 -0400 Message-Id: <20250505223922.2682012-88-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250505223922.2682012-1-sashal@kernel.org> References: <20250505223922.2682012-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.12.26 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250505_154224_046676_A17708A8 X-CRM114-Status: UNSURE ( 9.26 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Nick Hu [ Upstream commit 70c93b026ed07078e933583591aa9ca6701cd9da ] Stop the timer when the cpu is going to be offline otherwise the timer interrupt may be pending while performing power-down. Suggested-by: Anup Patel Link: https://lore.kernel.org/lkml/20240829033904.477200-3-nick.hu@sifive.com/T/#u Signed-off-by: Nick Hu Reviewed-by: Anup Patel Acked-by: Daniel Lezcano Link: https://lore.kernel.org/r/20250219114135.27764-3-nick.hu@sifive.com Signed-off-by: Alexandre Ghiti Signed-off-by: Sasha Levin --- drivers/clocksource/timer-riscv.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/clocksource/timer-riscv.c b/drivers/clocksource/timer-riscv.c index 48ce50c5f5e68..4d7cf338824a3 100644 --- a/drivers/clocksource/timer-riscv.c +++ b/drivers/clocksource/timer-riscv.c @@ -126,7 +126,13 @@ static int riscv_timer_starting_cpu(unsigned int cpu) static int riscv_timer_dying_cpu(unsigned int cpu) { + /* + * Stop the timer when the cpu is going to be offline otherwise + * the timer interrupt may be pending while performing power-down. + */ + riscv_clock_event_stop(); disable_percpu_irq(riscv_clock_event_irq); + return 0; } -- 2.39.5 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv