All of lore.kernel.org
 help / color / mirror / Atom feed
* FAILED: patch "[PATCH] ASoC: mediatek: mt8192: Check runtime resume during probe" failed to apply to 6.6-stable tree
@ 2026-07-20 12:32 gregkh
  2026-07-23  2:29 ` [PATCH 6.6.y 1/6] ASoC: mediatek: mt8195: Remove afe-dai component and rework codec link Sasha Levin
  0 siblings, 1 reply; 7+ messages in thread
From: gregkh @ 2026-07-20 12:32 UTC (permalink / raw)
  To: cassiogabrielcontato, broonie; +Cc: stable


The patch below does not apply to the 6.6-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y
git checkout FETCH_HEAD
git cherry-pick -x e24d5dde56a50946020b134fa8448869093db76a
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2026072021-woof-etching-9d40@gregkh' --subject-prefix 'PATCH 6.6.y' 'HEAD^..'

Possible dependencies:



thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From e24d5dde56a50946020b134fa8448869093db76a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A1ssio=20Gabriel?= <cassiogabrielcontato@gmail.com>
Date: Wed, 27 May 2026 10:55:47 -0300
Subject: [PATCH] ASoC: mediatek: mt8192: Check runtime resume during probe
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The MT8192 AFE probe enables runtime PM temporarily while reinitializing
the regmap cache from hardware, but it uses pm_runtime_get_sync()
without checking the return value. If runtime resume fails, probe keeps
going without the device necessarily being accessible, and
pm_runtime_get_sync() may leave the PM usage count incremented.

The regmap_reinit_cache() failure path also returns before dropping the
temporary PM reference and before clearing pm_runtime_bypass_reg_ctl.

Use pm_runtime_resume_and_get() so resume failures do not leak a usage
count, and clear the temporary bypass flag after dropping the probe PM
reference on all regmap_reinit_cache() outcomes.

Fixes: 125ab5d588b0 ("ASoC: mediatek: mt8192: add platform driver")
Cc: stable@vger.kernel.org
Signed-off-by: Cássio Gabriel <cassiogabrielcontato@gmail.com>
Link: https://patch.msgid.link/20260527-asoc-mt8192-probe-cleanup-v1-2-1bb834d05b72@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/mediatek/mt8192/mt8192-afe-pcm.c b/sound/soc/mediatek/mt8192/mt8192-afe-pcm.c
index 9f5057eeeff9..db0ae44a86af 100644
--- a/sound/soc/mediatek/mt8192/mt8192-afe-pcm.c
+++ b/sound/soc/mediatek/mt8192/mt8192-afe-pcm.c
@@ -2227,15 +2227,19 @@ static int mt8192_afe_pcm_dev_probe(struct platform_device *pdev)
 
 	/* enable clock for regcache get default value from hw */
 	afe_priv->pm_runtime_bypass_reg_ctl = true;
-	pm_runtime_get_sync(dev);
+	ret = pm_runtime_resume_and_get(dev);
+	if (ret) {
+		afe_priv->pm_runtime_bypass_reg_ctl = false;
+		return dev_err_probe(dev, ret, "failed to resume device\n");
+	}
 
 	ret = regmap_reinit_cache(afe->regmap, &mt8192_afe_regmap_config);
-	if (ret)
-		return dev_err_probe(dev, ret, "regmap_reinit_cache fail\n");
-
 	pm_runtime_put_sync(dev);
 	afe_priv->pm_runtime_bypass_reg_ctl = false;
 
+	if (ret)
+		return dev_err_probe(dev, ret, "regmap_reinit_cache fail\n");
+
 	regcache_cache_only(afe->regmap, true);
 	regcache_mark_dirty(afe->regmap);
 


^ permalink raw reply related	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2026-07-23  2:29 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-07-20 12:32 FAILED: patch "[PATCH] ASoC: mediatek: mt8192: Check runtime resume during probe" failed to apply to 6.6-stable tree gregkh
2026-07-23  2:29 ` [PATCH 6.6.y 1/6] ASoC: mediatek: mt8195: Remove afe-dai component and rework codec link Sasha Levin
2026-07-23  2:29   ` [PATCH 6.6.y 2/6] ASoC: mediatek: mt8192-afe-pcm: Convert to devm_pm_runtime_enable() Sasha Levin
2026-07-23  2:29   ` [PATCH 6.6.y 3/6] ASoC: mediatek: mt8192-afe-pcm: Simplify with dev_err_probe() Sasha Levin
2026-07-23  2:29   ` [PATCH 6.6.y 4/6] ASoC: mediatek: Use common mtk_afe_pcm_platform with common probe cb Sasha Levin
2026-07-23  2:29   ` [PATCH 6.6.y 5/6] ASoC: mediatek: mt8192-afe-pcm: Simplify probe() with local dev variable Sasha Levin
2026-07-23  2:29   ` [PATCH 6.6.y 6/6] ASoC: mediatek: mt8192: Check runtime resume during probe Sasha Levin

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.