From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0E03F35903A; Mon, 5 May 2025 22:42:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746484943; cv=none; b=bEzD+87fQjIuRbDnFAsX0j4Dvu7X60jYtTO6poCk8Eopfmcyl+r06mxB8jvn+Mg8pVcsmW6VH3PsF4BiToNRZVBPVMFC2JIIpnR0kFIZWgOcqh+XTMk+X/ctqLm8Qv3JIYnOz2CcaiI59CI8sQCKfMdFrgYowTMQgNqr2622WS4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746484943; c=relaxed/simple; bh=NWrCB9QKWE9LHJw3TZ6TiMGktRwEOC/Vp74f1sAzblg=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=l1/ek/P7ZZyWs5eBaxX5FTRg4rPJfH63/xjxkhzAQj8xNGJD4a7ZrPWuVb0OLzLcSvhnMGMwlTvVSOl4TyFu4GON6JnOjhISoZ3/VTJmXOqJrfqKjxt1LvyG2GURSZIDJxXZ+JVnxSsEgBRUNsk8nYVfUjkP1Q29CNW7iJBKAAY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=pSE+zTCj; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="pSE+zTCj" 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> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.12.26 Content-Transfer-Encoding: 8bit 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