From patchwork Mon Nov 29 08:22:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fenglin Wu X-Patchwork-Id: 12643793 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BE862C4332F for ; Mon, 29 Nov 2021 08:24:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243618AbhK2I2C (ORCPT ); Mon, 29 Nov 2021 03:28:02 -0500 Received: from alexa-out.qualcomm.com ([129.46.98.28]:56662 "EHLO alexa-out.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243230AbhK2I0B (ORCPT ); Mon, 29 Nov 2021 03:26:01 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1638174164; x=1669710164; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=cdkFVgjDJ8+uVmfLIwHM3XZjlTGoRIvGrQjqko0zAxI=; b=vmLmUm1O85JwVSZkol9IfgHOj5ng/fnX60yKy2mWHotUSe7NJsMYGZ+a 0AuIEUnmewZpRy1hDGs3DQCWp1Zi2uevbfT/Mq9R/Lxr0trOG7KNCuu+d w9/WN8uWIMLUsKk+GJeyocT4x29NQLShAa3P357rlbdZe/x0RdOISUu7T E=; Received: from ironmsg08-lv.qualcomm.com ([10.47.202.152]) by alexa-out.qualcomm.com with ESMTP; 29 Nov 2021 00:22:44 -0800 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg08-lv.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Nov 2021 00:22:43 -0800 Received: from nalasex01c.na.qualcomm.com (10.47.97.35) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.922.19; Mon, 29 Nov 2021 00:22:43 -0800 Received: from fenglinw-gv.qualcomm.com (10.80.80.8) by nalasex01c.na.qualcomm.com (10.47.97.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.922.19; Mon, 29 Nov 2021 00:22:40 -0800 From: Fenglin Wu To: , , CC: , , , Abhijeet Dharmapurikar Subject: [PATCH v3 01/10] spmi: pmic-arb: handle spurious interrupt Date: Mon, 29 Nov 2021 16:22:08 +0800 Message-ID: <1638174137-23290-2-git-send-email-quic_fenglinw@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1638174137-23290-1-git-send-email-quic_fenglinw@quicinc.com> References: <1638174137-23290-1-git-send-email-quic_fenglinw@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01c.na.qualcomm.com (10.47.97.35) Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Abhijeet Dharmapurikar Call handle_bad_irq() for handling spurious interrupt. While at it, add an error print in cleanup_irq() for any spurious interrupt which is fired but not having interrupt handler registered. Signed-off-by: Abhijeet Dharmapurikar Signed-off-by: David Collins Signed-off-by: Fenglin Wu --- drivers/spmi/spmi-pmic-arb.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c index bbbd311..da629cc 100644 --- a/drivers/spmi/spmi-pmic-arb.c +++ b/drivers/spmi/spmi-pmic-arb.c @@ -489,6 +489,8 @@ static void cleanup_irq(struct spmi_pmic_arb *pmic_arb, u16 apid, int id) u8 per = ppid & 0xFF; u8 irq_mask = BIT(id); + dev_err_ratelimited(&pmic_arb->spmic->dev, "%s apid=%d sid=0x%x per=0x%x irq=%d\n", + __func__, apid, sid, per, id); writel_relaxed(irq_mask, pmic_arb->ver_ops->irq_clear(pmic_arb, apid)); if (pmic_arb_write_cmd(pmic_arb->spmic, SPMI_CMD_EXT_WRITEL, sid, @@ -502,10 +504,10 @@ static void cleanup_irq(struct spmi_pmic_arb *pmic_arb, u16 apid, int id) irq_mask, ppid); } -static void periph_interrupt(struct spmi_pmic_arb *pmic_arb, u16 apid) +static int periph_interrupt(struct spmi_pmic_arb *pmic_arb, u16 apid) { unsigned int irq; - u32 status, id; + u32 status, id, handled = 0; u8 sid = (pmic_arb->apid_data[apid].ppid >> 8) & 0xF; u8 per = pmic_arb->apid_data[apid].ppid & 0xFF; @@ -520,7 +522,10 @@ static void periph_interrupt(struct spmi_pmic_arb *pmic_arb, u16 apid) continue; } generic_handle_irq(irq); + handled++; } + + return (handled) ? 0 : -EINVAL; } static void pmic_arb_chained_irq(struct irq_desc *desc) @@ -531,7 +536,7 @@ static void pmic_arb_chained_irq(struct irq_desc *desc) int first = pmic_arb->min_apid >> 5; int last = pmic_arb->max_apid >> 5; u8 ee = pmic_arb->ee; - u32 status, enable; + u32 status, enable, handled = 0; int i, id, apid; chained_irq_enter(chip, desc); @@ -546,10 +551,14 @@ static void pmic_arb_chained_irq(struct irq_desc *desc) enable = readl_relaxed( ver_ops->acc_enable(pmic_arb, apid)); if (enable & SPMI_PIC_ACC_ENABLE_BIT) - periph_interrupt(pmic_arb, apid); + if (periph_interrupt(pmic_arb, apid) == 0) + handled++; } } + if (handled == 0) + handle_bad_irq(desc); + chained_irq_exit(chip, desc); }