Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18;
From:   Sasha Levin <sashal@kernel.org>
To:     linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc:     Christophe JAILLET <christophe.jaillet@wanadoo.fr>,
        Mark Brown <broonie@kernel.org>,
        Sasha Levin <sashal@kernel.org>, lgirdwood@gmail.com,
        perex@perex.cz, tiwai@suse.com, alsa-devel@alsa-project.org
Subject: [PATCH AUTOSEL 5.17 01/22] ASoC: soc-pcm: use GFP_KERNEL when the code is sleepable
Date:   Tue, 26 Apr 2022 15:01:24 -0400
Message-Id: <20220426190145.2351135-1-sashal@kernel.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

[ Upstream commit fb6d679fee95d272c0a94912c4e534146823ee89 ]

At the kzalloc() call in dpcm_be_connect(), there is no spin lock involved.
It's merely protected by card->pcm_mutex, instead.  The spinlock is applied
at the later call with snd_soc_pcm_stream_lock_irq() only for the list
manipulations.  (See it's *_irq(), not *_irqsave(); that means the context
being sleepable at that point.)  So, we can use GFP_KERNEL safely there.

This patch revert commit d8a9c6e1f676 ("ASoC: soc-pcm: use GFP_ATOMIC for
dpcm structure") which is no longer needed since commit b7898396f4bb
("ASoC: soc-pcm: Fix and cleanup DPCM locking").

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/e740f1930843060e025e3c0f17ec1393cfdafb26.1648757961.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/soc-pcm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 9a954680d492..11c9853e9e80 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -1214,7 +1214,7 @@ static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe,
 		be_substream->pcm->nonatomic = 1;
 	}
 
-	dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_ATOMIC);
+	dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_KERNEL);
 	if (!dpcm)
 		return -ENOMEM;
 
-- 
2.35.1