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 BF3611CEEAF; Wed, 2 Oct 2024 14:25:56 +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=1727879156; cv=none; b=BQPgaKkwGfHrG9YM4lPwL+vWE/05JAcpknonE6W4KTrlAtABmZ1LMhS8ZU41d+0J4/PxiWUgyJwlYxikWV1eLwHMCm10pEBPIL42kJCkdSUyBeNJ4sdWFwNbJkGsmk699gyMOL14KNadwU6MxAOtJurH+tv//1LWRNFAJbhJbew= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727879156; c=relaxed/simple; bh=K0vJ5fIXDR24nLQ8oDG01vcSJHJsubETK4M3kOxQ/Hc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=BXZW31q0Q8EDy49iP0zx7UonAkMJrRTl+jYC/AJ3L1TWhi3bqC9d9DypoHA8EVs2nP5I3+hWKe/SjmBXLLhgZKCCaZhN9n6zYb+RaqfS500oggBkpCYo07H9ERxIxjniPB9msmhnn+Hslcu9eYTtKPUC7xeLyaoOXUBArtHmyn0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ynzSC9SX; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="ynzSC9SX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 47AE7C4CECD; Wed, 2 Oct 2024 14:25:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1727879156; bh=K0vJ5fIXDR24nLQ8oDG01vcSJHJsubETK4M3kOxQ/Hc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ynzSC9SXiBC5kcpwyGqybZsN9w0qD83Dzm8NEF2d+JxfsH/YW45IKr8nWum8Y0GQC R4Ii+v2FMNUGIEx+VtLAGIrICnW0RXfMQ784c4SfO/HSuhf3+f9HN+kgMA9P2y93fJ 10mseb/oCwAxNAz/4swRo46fC9CaOiGFrGj1izXU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jing Zhang , Shuai Xue , Mark Rutland , Will Deacon , Sasha Levin Subject: [PATCH 6.6 022/538] drivers/perf: Fix ali_drw_pmu driver interrupt status clearing Date: Wed, 2 Oct 2024 14:54:21 +0200 Message-ID: <20241002125752.889351792@linuxfoundation.org> X-Mailer: git-send-email 2.46.2 In-Reply-To: <20241002125751.964700919@linuxfoundation.org> References: <20241002125751.964700919@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jing Zhang [ Upstream commit a3dd920977dccc453c550260c4b7605b280b79c3 ] The alibaba_uncore_pmu driver forgot to clear all interrupt status in the interrupt processing function. After the PMU counter overflow interrupt occurred, an interrupt storm occurred, causing the system to hang. Therefore, clear the correct interrupt status in the interrupt handling function to fix it. Fixes: cf7b61073e45 ("drivers/perf: add DDR Sub-System Driveway PMU driver for Yitian 710 SoC") Signed-off-by: Jing Zhang Reviewed-by: Shuai Xue Acked-by: Mark Rutland Link: https://lore.kernel.org/r/1724297611-20686-1-git-send-email-renyu.zj@linux.alibaba.com Signed-off-by: Will Deacon Signed-off-by: Sasha Levin --- drivers/perf/alibaba_uncore_drw_pmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/perf/alibaba_uncore_drw_pmu.c b/drivers/perf/alibaba_uncore_drw_pmu.c index 19d459a36be55..818ce4424d34d 100644 --- a/drivers/perf/alibaba_uncore_drw_pmu.c +++ b/drivers/perf/alibaba_uncore_drw_pmu.c @@ -408,7 +408,7 @@ static irqreturn_t ali_drw_pmu_isr(int irq_num, void *data) } /* clear common counter intr status */ - clr_status = FIELD_PREP(ALI_DRW_PMCOM_CNT_OV_INTR_MASK, 1); + clr_status = FIELD_PREP(ALI_DRW_PMCOM_CNT_OV_INTR_MASK, status); writel(clr_status, drw_pmu->cfg_base + ALI_DRW_PMU_OV_INTR_CLR); } -- 2.43.0