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 70033748C for ; Sun, 16 Jul 2023 19:55:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EA85FC433C8; Sun, 16 Jul 2023 19:55:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1689537359; bh=IYKDcxIVQKu3FQXVAGF9R5TBKMof6I4j6UvZuNWVqZ0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=0XiCkfGxCM3Wm+AJEDwelbDm4131MQ9RLibZsKDdSnfHjLdaRdxxLD1jAQNp4jtJF 95PY9QLBN5/PFwt3Rih8uMyBnsB62x6xg4mydwl9nCRTSJk0yuY3V7Qmy7ZeY4Tjtm /lkDahBucJdT4jPJAk4WhHqP+BU/DaNxSPXiU4/8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ilkka Koskinen , Will Deacon , Sasha Levin Subject: [PATCH 6.4 068/800] perf: arm_cspmu: Set irq affinitiy only if overflow interrupt is used Date: Sun, 16 Jul 2023 21:38:41 +0200 Message-ID: <20230716194950.678900478@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230716194949.099592437@linuxfoundation.org> References: <20230716194949.099592437@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Ilkka Koskinen [ Upstream commit 225d757012e0afa673d8c862e6fb39ed2f429b4d ] Don't try to set irq affinity if PMU doesn't have an overflow interrupt. Fixes: e37dfd65731d ("perf: arm_cspmu: Add support for ARM CoreSight PMU driver") Signed-off-by: Ilkka Koskinen Link: https://lore.kernel.org/r/20230608203742.3503486-1-ilkka@os.amperecomputing.com Signed-off-by: Will Deacon Signed-off-by: Sasha Levin --- drivers/perf/arm_cspmu/arm_cspmu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/perf/arm_cspmu/arm_cspmu.c b/drivers/perf/arm_cspmu/arm_cspmu.c index a3f1c410b4173..d0572162f0632 100644 --- a/drivers/perf/arm_cspmu/arm_cspmu.c +++ b/drivers/perf/arm_cspmu/arm_cspmu.c @@ -1232,7 +1232,8 @@ static struct platform_driver arm_cspmu_driver = { static void arm_cspmu_set_active_cpu(int cpu, struct arm_cspmu *cspmu) { cpumask_set_cpu(cpu, &cspmu->active_cpu); - WARN_ON(irq_set_affinity(cspmu->irq, &cspmu->active_cpu)); + if (cspmu->irq) + WARN_ON(irq_set_affinity(cspmu->irq, &cspmu->active_cpu)); } static int arm_cspmu_cpu_online(unsigned int cpu, struct hlist_node *node) -- 2.39.2