From patchwork Mon Aug 7 10:39:32 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oder Chiou X-Patchwork-Id: 9884971 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id AE40D603B4 for ; Mon, 7 Aug 2017 10:39:52 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 97A4628533 for ; Mon, 7 Aug 2017 10:39:52 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8AD592860B; Mon, 7 Aug 2017 10:39:52 +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=-1.9 required=2.0 tests=BAYES_00, 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 551B228533 for ; Mon, 7 Aug 2017 10:39:50 +0000 (UTC) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id 335982670B5; Mon, 7 Aug 2017 12:39:47 +0200 (CEST) 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 13A982670BE; Mon, 7 Aug 2017 12:39:46 +0200 (CEST) Received: from rtits2.realtek.com.tw (rtits2.realtek.com [211.75.126.72]) by alsa0.perex.cz (Postfix) with ESMTP id C66DD2669F6 for ; Mon, 7 Aug 2017 12:39:41 +0200 (CEST) Authenticated-By: X-SpamFilter-By: BOX Solutions SpamTrap 5.60 with qID v77AdckS017345, This message is accepted by code: ctloc85258 Received: from mail.realtek.com (rtitcas11.realtek.com.tw [172.21.6.12]) by rtits2.realtek.com.tw (8.15.2/2.56/5.77) with ESMTP id v77AdckS017345; Mon, 7 Aug 2017 18:39:38 +0800 Received: from RTITCASV01.realtek.com.tw (172.21.6.18) by RTITCAS11.realtek.com.tw (172.21.6.12) with Microsoft SMTP Server (TLS) id 14.3.351.0; Mon, 7 Aug 2017 18:39:38 +0800 Received: from localhost.localdomain (172.21.85.85) by RTITCASV01.realtek.com.tw (172.21.6.18) with Microsoft SMTP Server id 14.3.294.0; Mon, 7 Aug 2017 18:39:37 +0800 From: Oder Chiou To: , Date: Mon, 7 Aug 2017 18:39:32 +0800 Message-ID: <1502102372-27635-1-git-send-email-oder_chiou@realtek.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [172.21.85.85] Cc: Oder Chiou , jack.yu@realtek.com, alsa-devel@alsa-project.org, Hsin-Yu Chao , shumingf@realtek.com, bardliao@realtek.com, flove@realtek.com Subject: [alsa-devel] [PATCH] ASoC: rt5514: reset dma_offset at hw_params 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 dma_offset needs reset every time otherwise for consecutive PCM open the last dma_offset value will cause incorrect pointer position be reported to user space. Signed-off-by: Hsin-Yu Chao Signed-off-by: Oder Chiou --- sound/soc/codecs/rt5514-spi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/soc/codecs/rt5514-spi.c b/sound/soc/codecs/rt5514-spi.c index 6f513cc..640193d 100644 --- a/sound/soc/codecs/rt5514-spi.c +++ b/sound/soc/codecs/rt5514-spi.c @@ -151,7 +151,6 @@ static irqreturn_t rt5514_spi_irq(int irq, void *data) u8 buf[8]; rt5514_dsp->get_size = 0; - rt5514_dsp->dma_offset = 0; /** * The address area x1800XXXX is the register address, and it cannot @@ -205,6 +204,7 @@ static int rt5514_spi_hw_params(struct snd_pcm_substream *substream, ret = snd_pcm_lib_alloc_vmalloc_buffer(substream, params_buffer_bytes(hw_params)); rt5514_dsp->substream = substream; + rt5514_dsp->dma_offset = 0; mutex_unlock(&rt5514_dsp->dma_lock); return ret;