From patchwork Tue Apr 25 20:27:21 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?VmlsbGUgU3lyasOkbMOk?= X-Patchwork-Id: 9699641 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 7C68260224 for ; Tue, 25 Apr 2017 20:28:04 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6CEB32846D for ; Tue, 25 Apr 2017 20:28:04 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 612CF2847F; Tue, 25 Apr 2017 20:28:04 +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=unavailable 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 ADE822846D for ; Tue, 25 Apr 2017 20:28:03 +0000 (UTC) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id 3FC96267046; Tue, 25 Apr 2017 22:27:52 +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 A8C53267048; Tue, 25 Apr 2017 22:27:48 +0200 (CEST) Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by alsa0.perex.cz (Postfix) with ESMTP id 009A126703C for ; Tue, 25 Apr 2017 22:27:43 +0200 (CEST) Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 25 Apr 2017 13:27:42 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.37,251,1488873600"; d="scan'208";a="849753854" Received: from stinkbox.fi.intel.com (HELO stinkbox) ([10.237.72.174]) by FMSMGA003.fm.intel.com with SMTP; 25 Apr 2017 13:27:39 -0700 Received: by stinkbox (sSMTP sendmail emulation); Tue, 25 Apr 2017 23:27:38 +0300 From: ville.syrjala@linux.intel.com To: intel-gfx@lists.freedesktop.org Date: Tue, 25 Apr 2017 23:27:21 +0300 Message-Id: <20170425202730.1384-3-ville.syrjala@linux.intel.com> X-Mailer: git-send-email 2.10.2 In-Reply-To: <20170425202730.1384-1-ville.syrjala@linux.intel.com> References: <20170425202730.1384-1-ville.syrjala@linux.intel.com> MIME-Version: 1.0 Cc: Takashi Iwai , alsa-devel@alsa-project.org, Pierre-Louis Bossart Subject: [alsa-devel] [PATCH 02/11] ALSA: x86: Clear the pdata.notify_lpe_audio pointer before teardown 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: Ville Syrjälä Clear the notify function pointer in the platform data before we tear down the driver. Otherwise i915 would end up calling a stale function pointer and possibly explode. Cc: Takashi Iwai Cc: Pierre-Louis Bossart Signed-off-by: Ville Syrjälä --- sound/x86/intel_hdmi_audio.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/sound/x86/intel_hdmi_audio.c b/sound/x86/intel_hdmi_audio.c index bfac6f21ae5e..5b89662493c9 100644 --- a/sound/x86/intel_hdmi_audio.c +++ b/sound/x86/intel_hdmi_audio.c @@ -1665,6 +1665,11 @@ static int __maybe_unused hdmi_lpe_audio_resume(struct device *dev) static void hdmi_lpe_audio_free(struct snd_card *card) { struct snd_intelhad *ctx = card->private_data; + struct intel_hdmi_lpe_audio_pdata *pdata = ctx->dev->platform_data; + + spin_lock_irq(&pdata->lpe_audio_slock); + pdata->notify_audio_lpe = NULL; + spin_unlock_irq(&pdata->lpe_audio_slock); cancel_work_sync(&ctx->hdmi_audio_wq);