Return-path: Received: from mail-pd0-f175.google.com ([209.85.192.175]:60075 "EHLO mail-pd0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932599Ab3GKJMq (ORCPT ); Thu, 11 Jul 2013 05:12:46 -0400 From: Ming Lei To: Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org, Oliver Neukum , Alan Stern , linux-input@vger.kernel.org, linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, linux-wireless@vger.kernel.org, linux-media@vger.kernel.org, alsa-devel@alsa-project.org, Ming Lei , Clemens Ladisch , Jaroslav Kysela , Takashi Iwai Subject: [PATCH 46/50] Sound: usb: ua101: spin_lock in complete() cleanup Date: Thu, 11 Jul 2013 17:06:09 +0800 Message-Id: <1373533573-12272-47-git-send-email-ming.lei@canonical.com> (sfid-20130711_111357_239769_B3405E05) In-Reply-To: <1373533573-12272-1-git-send-email-ming.lei@canonical.com> References: <1373533573-12272-1-git-send-email-ming.lei@canonical.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: Complete() will be run with interrupt enabled, so disable local interrupt before holding a global lock which is held without irqsave. Cc: Clemens Ladisch Cc: Jaroslav Kysela Cc: Takashi Iwai Cc: alsa-devel@alsa-project.org Signed-off-by: Ming Lei --- sound/usb/misc/ua101.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/sound/usb/misc/ua101.c b/sound/usb/misc/ua101.c index 8b5d2c5..52a60c6 100644 --- a/sound/usb/misc/ua101.c +++ b/sound/usb/misc/ua101.c @@ -613,14 +613,24 @@ static int start_usb_playback(struct ua101 *ua) static void abort_alsa_capture(struct ua101 *ua) { - if (test_bit(ALSA_CAPTURE_RUNNING, &ua->states)) + if (test_bit(ALSA_CAPTURE_RUNNING, &ua->states)) { + unsigned long flags; + + local_irq_save(flags); snd_pcm_stop(ua->capture.substream, SNDRV_PCM_STATE_XRUN); + local_irq_restore(flags); + } } static void abort_alsa_playback(struct ua101 *ua) { - if (test_bit(ALSA_PLAYBACK_RUNNING, &ua->states)) + if (test_bit(ALSA_PLAYBACK_RUNNING, &ua->states)) { + unsigned long flags; + + local_irq_save(flags); snd_pcm_stop(ua->playback.substream, SNDRV_PCM_STATE_XRUN); + local_irq_restore(flags); + } } static int set_stream_hw(struct ua101 *ua, struct snd_pcm_substream *substream, -- 1.7.9.5