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 X-Spam-Level: X-Spam-Status: No, score=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3906CC55ABD for ; Tue, 10 Nov 2020 06:24:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E091220870 for ; Tue, 10 Nov 2020 06:24:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731035AbgKJGYu (ORCPT ); Tue, 10 Nov 2020 01:24:50 -0500 Received: from smtp2207-205.mail.aliyun.com ([121.197.207.205]:52591 "EHLO smtp2207-205.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726006AbgKJGYt (ORCPT ); Tue, 10 Nov 2020 01:24:49 -0500 X-Alimail-AntiSpam: AC=CONTINUE;BC=0.272725|-1;CH=green;DM=|CONTINUE|false|;DS=CONTINUE|ham_regular_dialog|0.00377925-0.00159347-0.994627;FP=11852684747916124327|1|1|17|0|-1|-1|-1;HT=ay29a033018047208;MF=frank@allwinnertech.com;NM=1;PH=DS;RN=9;RT=9;SR=0;TI=SMTPD_---.Iunhutb_1604989482; Received: from allwinnertech.com(mailfrom:frank@allwinnertech.com fp:SMTPD_---.Iunhutb_1604989482) by smtp.aliyun-inc.com(10.147.44.118); Tue, 10 Nov 2020 14:24:46 +0800 From: Frank Lee To: tiny.windzz@gmail.com Cc: linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Yangtao Li , stable@vger.kernel.org, Linus Walleij , Maxime Ripard , Chen-Yu Tsai Subject: [RESEND PATCH 03/19] pinctrl: sunxi: Always call chained_irq_{enter, exit} in sunxi_pinctrl_irq_handler Date: Tue, 10 Nov 2020 14:24:40 +0800 Message-Id: <85263ce8b058e80cea25c6ad6383eb256ce96cc8.1604988979.git.frank@allwinnertech.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yangtao Li It is found on many allwinner soc that there is a low probability that the interrupt status cannot be read in sunxi_pinctrl_irq_handler. This will cause the interrupt status of a gpio bank to always be active on gic, preventing gic from responding to other spi interrupts correctly. So we should call the chained_irq_* each time enter sunxi_pinctrl_irq_handler(). Cc: stable@vger.kernel.org Signed-off-by: Yangtao Li --- drivers/pinctrl/sunxi/pinctrl-sunxi.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.c b/drivers/pinctrl/sunxi/pinctrl-sunxi.c index 9d8b59dafa4b..dc8d39ae045b 100644 --- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c +++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c @@ -1141,20 +1141,22 @@ static void sunxi_pinctrl_irq_handler(struct irq_desc *desc) WARN_ON(bank == pctl->desc->irq_banks); + chained_irq_enter(chip, desc); + reg = sunxi_irq_status_reg_from_bank(pctl->desc, bank); val = readl(pctl->membase + reg); if (val) { int irqoffset; - chained_irq_enter(chip, desc); for_each_set_bit(irqoffset, &val, IRQ_PER_BANK) { int pin_irq = irq_find_mapping(pctl->domain, bank * IRQ_PER_BANK + irqoffset); generic_handle_irq(pin_irq); } - chained_irq_exit(chip, desc); } + + chained_irq_exit(chip, desc); } static int sunxi_pinctrl_add_function(struct sunxi_pinctrl *pctl, -- 2.28.0