From patchwork Wed Jan 30 01:42:46 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuninori Morimoto X-Patchwork-Id: 10787541 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id EF5931390 for ; Wed, 30 Jan 2019 01:43:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DE3A22D626 for ; Wed, 30 Jan 2019 01:43:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D0B6D2D63C; Wed, 30 Jan 2019 01:43:02 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 777F32D626 for ; Wed, 30 Jan 2019 01:43:01 +0000 (UTC) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id 7EE142674EF; Wed, 30 Jan 2019 02:42:59 +0100 (CET) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id B37A4267595; Wed, 30 Jan 2019 02:42:56 +0100 (CET) Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by alsa0.perex.cz (Postfix) with ESMTP id 04E732674B9 for ; Wed, 30 Jan 2019 02:42:50 +0100 (CET) Date: 30 Jan 2019 10:42:46 +0900 X-IronPort-AV: E=Sophos;i="5.56,538,1539615600"; d="scan'208";a="6335931" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 30 Jan 2019 10:42:46 +0900 Received: from morimoto-PC.renesas.com (unknown [10.166.18.140]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id DFB71415CCD6; Wed, 30 Jan 2019 10:42:46 +0900 (JST) Message-ID: <874l9rnd6z.wl-kuninori.morimoto.gx@renesas.com> From: Kuninori Morimoto User-Agent: Wanderlust/2.15.9 Emacs/24.5 Mule/6.0 To: Mark Brown MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Cc: Valentine Barshak , Linux-ALSA , Yusuke Goda Subject: [alsa-devel] [PATCH] ASoC: rsnd: fixup rsnd_ssi_master_clk_start() user count check X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP From: Kuninori Morimoto commit 4d230d1271064 ("ASoC: rsnd: fixup not to call clk_get/set under non-atomic") added new rsnd_ssi_prepare() and moved rsnd_ssi_master_clk_start() to .prepare. But, ssi user count (= ssi->usrcnt) is incremented at .init (= rsnd_ssi_init()). Because of these timing exchange, ssi->usrcnt check at rsnd_ssi_master_clk_start() should be adjusted. Otherwise, 2nd master clock setup will be no check. This patch fixup this issue. Fixes: commit 4d230d1271064 ("ASoC: rsnd: fixup not to call clk_get/set under non-atomic") Reported-by: Yusuke Goda Reported-by: Valentine Barshak Signed-off-by: Kuninori Morimoto Tested-by: Yusuke Goda --- sound/soc/sh/rcar/ssi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c index 45ef295..f5afab6 100644 --- a/sound/soc/sh/rcar/ssi.c +++ b/sound/soc/sh/rcar/ssi.c @@ -286,7 +286,7 @@ static int rsnd_ssi_master_clk_start(struct rsnd_mod *mod, if (rsnd_ssi_is_multi_slave(mod, io)) return 0; - if (ssi->usrcnt > 1) { + if (ssi->usrcnt > 0) { if (ssi->rate != rate) { dev_err(dev, "SSI parent/child should use same rate\n"); return -EINVAL;