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 0CB43C3ABAC for ; Tue, 6 May 2025 04:36:45 +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=0q7G2mh5xkkSG9wY6x7F+06w0gjTR/NTs0F8s2vljws=; b=KlRph1r6Tz/sIG OH/i5+uC6EAqL/6YnsMYj5iuv5IhYO7inGV+oQUWmT6u3y1OBD1j61YTF82KdxuJLZ2E2zBWhFohh CknbZ9ylAEdhr+ZfPyK2zOwDAWszIfc1Nkh2DzBzx2RKVCLm8HCgT4XY9w7sFy1TaZOhLE+k9Wiw8 /H+Mo4V7EAm1vpHF8hMzPJxzSw4b3TM0pbp85id9pxjvgiDYIPjqWLcJDmaY3dbqo6I+DBpYbgUp4 kHSAJzA9y7g+Kg+jieWoT00wNCW3m2kfgpzIzMAgzn/SF4Wufb+hBuo8BKSGSSZdulGwi5xUGiiiC Y/K9Bj7u/pvE6Hd3kRAA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uCA2p-0000000AFTp-17C1; Tue, 06 May 2025 04:36:39 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uC55Q-000000090qr-47wu for linux-riscv@lists.infradead.org; Mon, 05 May 2025 23:19:02 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 07FC74345A; Mon, 5 May 2025 23:18:58 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 47F8FC4CEE4; Mon, 5 May 2025 23:18:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746487140; bh=B4/AFmH4EzCm+/gzXspUOA/ZQOae4G4h8zpgvZNFaUI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VKDb4bVNN79c0miYr+Zo1oQkCjTrVqi7m17qNVzpm0HuYrYtb9RRc8vnB3bet7r6E IO3g8l2nOqXdSU7fnD7Eu9AcdBGcA6KAkKVt1z4ZvaZjFciwmsfwlxhtAEtFQTWHpC iT2MDvJ/zV8lIIwJEtLc87LZw3CdoyOnr/HV1ch45O1r8KaCtTewMcNW98+V8oIlNt hr+bzUV6bxhAyHnFhf+IcI5TU60NPnvUftUZxy30OgYkw1jllXBViMy9YO2RIV+EuS cQNBeMugC/ZjcU6FDidiRG3xTHkHYLF8FPFnqQqePcU0FbJzQ3kMv3ja4NihWCyVxQ sd7dWhdD5dRiQ== 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 5.10 021/114] clocksource/drivers/timer-riscv: Stop stimecmp when cpu hotplug Date: Mon, 5 May 2025 19:16:44 -0400 Message-Id: <20250505231817.2697367-21-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250505231817.2697367-1-sashal@kernel.org> References: <20250505231817.2697367-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.10.237 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250505_161901_035641_CB0B37E0 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 c51c5ed15aa75..427c92dd048c4 100644 --- a/drivers/clocksource/timer-riscv.c +++ b/drivers/clocksource/timer-riscv.c @@ -75,7 +75,13 @@ 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