From nobody Sun Dec 14 06:16:06 2025 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 B93D5C00140 for ; Mon, 15 Aug 2022 19:45:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233163AbiHOTpY (ORCPT ); Mon, 15 Aug 2022 15:45:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49742 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344998AbiHOTmH (ORCPT ); Mon, 15 Aug 2022 15:42:07 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 064A967CAA; Mon, 15 Aug 2022 11:47:51 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 2F4D7B81057; Mon, 15 Aug 2022 18:47:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 73191C433D7; Mon, 15 Aug 2022 18:47:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660589268; bh=V1JLJD5JDI15dPV+5pZwuivXT3yv18inMqghy5mVCUs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GbkZpL1kEADQG9Mtx3gqenqdMv5OwGVOdTofsc9p5rEgvMBLM+gAwkM3taVUDXROv eu7QW4JQkJKQ0Ve8vAd9AJSWzm+i8mS53jUEhifvs0V/DPLqs+XHRQ8ZI462qRl+RH BOAI6wbRLEFc41ShHa4Qcm1lthsZUFCm38CVWdG4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Claudiu Beznea , Mark Brown , Sasha Levin Subject: [PATCH 5.15 634/779] ASoC: mchp-spdifrx: disable end of block interrupt on failures Date: Mon, 15 Aug 2022 20:04:38 +0200 Message-Id: <20220815180404.444352967@linuxfoundation.org> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220815180337.130757997@linuxfoundation.org> References: <20220815180337.130757997@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Claudiu Beznea [ Upstream commit 768ac4f12ca0fda935f58eb8c5120e9d795bc6e3 ] Disable end of block interrupt in case of wait for completion timeout or errors to undo previously enable operation (done in mchp_spdifrx_isr_blockend_en()). Otherwise we can end up with an unbalanced reference counter for this interrupt. Fixes: ef265c55c1ac ("ASoC: mchp-spdifrx: add driver for SPDIF RX") Signed-off-by: Claudiu Beznea Link: https://lore.kernel.org/r/20220727090814.2446111-2-claudiu.beznea@mic= rochip.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/atmel/mchp-spdifrx.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/sound/soc/atmel/mchp-spdifrx.c b/sound/soc/atmel/mchp-spdifrx.c index bcd4f3e4fb0f..2a62d9a2fa0d 100644 --- a/sound/soc/atmel/mchp-spdifrx.c +++ b/sound/soc/atmel/mchp-spdifrx.c @@ -288,15 +288,17 @@ static void mchp_spdifrx_isr_blockend_en(struct mchp_= spdifrx_dev *dev) spin_unlock_irqrestore(&dev->blockend_lock, flags); } =20 -/* called from atomic context only */ +/* called from atomic/non-atomic context */ static void mchp_spdifrx_isr_blockend_dis(struct mchp_spdifrx_dev *dev) { - spin_lock(&dev->blockend_lock); + unsigned long flags; + + spin_lock_irqsave(&dev->blockend_lock, flags); dev->blockend_refcount--; /* don't enable BLOCKEND interrupt if it's already enabled */ if (dev->blockend_refcount =3D=3D 0) regmap_write(dev->regmap, SPDIFRX_IDR, SPDIFRX_IR_BLOCKEND); - spin_unlock(&dev->blockend_lock); + spin_unlock_irqrestore(&dev->blockend_lock, flags); } =20 static irqreturn_t mchp_spdif_interrupt(int irq, void *dev_id) @@ -575,6 +577,7 @@ static int mchp_spdifrx_subcode_ch_get(struct mchp_spdi= frx_dev *dev, if (ret <=3D 0) { dev_dbg(dev->dev, "user data for channel %d timeout\n", channel); + mchp_spdifrx_isr_blockend_dis(dev); return ret; } =20 --=20 2.35.1