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Wed, 28 Oct 2026 22:44:31 -0700 (PDT) Received: from localhost.localdomain ([183.96.175.225]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3ae6e83127csm2433520a91.10.2026.10.28.22.44.28 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Wed, 28 Oct 2026 22:44:31 -0700 (PDT) From: Joonho Lee To: linux-sound@vger.kernel.org Cc: tiwai@suse.de, perex@perex.cz, anton.yakovlev@opensynergy.com, mst@redhat.com, virtualization@lists.linux.dev, linux-kernel@vger.kernel.org, corbet@lwn.net, skhan@linuxfoundation.org, rdunlap@infradead.org, linux-doc@vger.kernel.org, Joonho Lee Subject: [PATCH v8 08/14] ALSA: pcm: stop paused streams before synchronizing teardown Date: Thu, 29 Oct 2026 14:43:48 +0900 Message-ID: <20261029054354.2931-9-mynameisjune111@gmail.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20261029054354.2931-1-mynameisjune111@gmail.com> References: <20261029054354.2931-1-mynameisjune111@gmail.com> X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit A paused stream can retain outstanding driver requests. Moving it out of PAUSED without the STOP trigger leaves device state paused, and skipping stop_operating prevents the following sync_stop from cleaning it up. Run the existing STOP and stop_operating path for PAUSED as well as running streams. This replaces the earlier v7 proposal which only marked stop_operating. Drivers now receive STOP when a paused stream is dropped or stopped by an error. The change affects all PCM drivers. Playback pause/drop/prepare/write and capture lifecycle tests exercise the change. Physical drivers beyond virtio-snd still need review and testing. Assisted-by: LLM Signed-off-by: Joonho Lee --- diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -1607,7 +1607,8 @@ snd_pcm_state_t state) { if (substream->runtime->trigger_master == substream && - snd_pcm_running(substream)) { + (snd_pcm_running(substream) || + substream->runtime->state == SNDRV_PCM_STATE_PAUSED)) { substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); substream->runtime->stop_operating = true; }