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=-9.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,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 28322ECDE44 for ; Wed, 31 Oct 2018 23:07:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D9D4D20664 for ; Wed, 31 Oct 2018 23:07:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="yqGot5v2" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D9D4D20664 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729222AbeKAIHu (ORCPT ); Thu, 1 Nov 2018 04:07:50 -0400 Received: from mail.kernel.org ([198.145.29.99]:55980 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729150AbeKAIHs (ORCPT ); Thu, 1 Nov 2018 04:07:48 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id BC8D520830; Wed, 31 Oct 2018 23:07:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1541027258; bh=8YA0vWFhpY+Sn68jT8xm6ghQKKZys++ILysgTsBS9rE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=yqGot5v2fHi4nTUaHEyg1SHYxD91jCt8nrTNewbBmZhmC0sTnjl7Whg/clZg7Hw3V 19chwncKgQOi6j0Hmqry3YdTZ1NZsgRLlW/zKU3z2zEQx7wAQmUXCg1QpP+VEopeFT Bp+t6VkMrmZYi/95Go8KYp6OfV8u4ymIbWLWYWtw= From: Sasha Levin To: stable@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Loic Poulain , Peter Chen , Sasha Levin Subject: [PATCH AUTOSEL 4.19 129/146] usb: chipidea: Prevent unbalanced IRQ disable Date: Wed, 31 Oct 2018 19:05:24 -0400 Message-Id: <20181031230541.28822-129-sashal@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181031230541.28822-1-sashal@kernel.org> References: <20181031230541.28822-1-sashal@kernel.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Loic Poulain [ Upstream commit 8b97d73c4d72a2abf58f8e49062a7ee1e5f1334e ] The ChipIdea IRQ is disabled before scheduling the otg work and re-enabled on otg work completion. However if the job is already scheduled we have to undo the effect of disable_irq int order to balance the IRQ disable-depth value. Fixes: be6b0c1bd0be ("usb: chipidea: using one inline function to cover queue work operations") Signed-off-by: Loic Poulain Signed-off-by: Peter Chen Signed-off-by: Sasha Levin --- drivers/usb/chipidea/otg.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/chipidea/otg.h b/drivers/usb/chipidea/otg.h index 7e7428e48bfa..4f8b8179ec96 100644 --- a/drivers/usb/chipidea/otg.h +++ b/drivers/usb/chipidea/otg.h @@ -17,7 +17,8 @@ void ci_handle_vbus_change(struct ci_hdrc *ci); static inline void ci_otg_queue_work(struct ci_hdrc *ci) { disable_irq_nosync(ci->irq); - queue_work(ci->wq, &ci->work); + if (queue_work(ci->wq, &ci->work) == false) + enable_irq(ci->irq); } #endif /* __DRIVERS_USB_CHIPIDEA_OTG_H */ -- 2.17.1