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From: "Derek J. Clark" <derekjohn.clark@gmail.com>
To: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>,
	"Hans de Goede" <hansg@kernel.org>
Cc: Mark Pearson <mpearson-lenovo@squebb.ca>,
	Armin Wolf <W_Armin@gmx.de>, Jonathan Corbet <corbet@lwn.net>,
	Rong Zhang <i@rong.moe>, Kurt Borja <kuurtb@gmail.com>,
	"Derek J . Clark" <derekjohn.clark@gmail.com>,
	platform-driver-x86@vger.kernel.org,
	linux-kernel@vger.kernel.org, stable@vger.kernel.org
Subject: [PATCH v8 03/16] platform/x86: lenovo-wmi-other: Balance component bind and unbind
Date: Mon,  6 Apr 2026 20:13:47 +0000	[thread overview]
Message-ID: <20260406201400.438221-4-derekjohn.clark@gmail.com> (raw)
In-Reply-To: <20260406201400.438221-1-derekjohn.clark@gmail.com>

From: Rong Zhang <i@rong.moe>

When lwmi_om_master_bind() fails, the master device's components are
left bound, with the aggregate device destroyed due to the failure
(found by sashiko.dev [1]).

Balance calls to component_bind_all() and component_unbind_all() when an
error is propagated to the component framework.

No functional change intended.

Fixes: edc4b183b794 ("platform/x86: Add Lenovo Other Mode WMI Driver")
Cc: stable@vger.kernel.org
Link: https://sashiko.dev/#/patchset/20260331181208.421552-1-derekjohn.clark%40gmail.com [1]
Signed-off-by: Rong Zhang <i@rong.moe>
---
 drivers/platform/x86/lenovo/wmi-other.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/lenovo/wmi-other.c b/drivers/platform/x86/lenovo/wmi-other.c
index b47418df099f..4b47b5886e33 100644
--- a/drivers/platform/x86/lenovo/wmi-other.c
+++ b/drivers/platform/x86/lenovo/wmi-other.c
@@ -1068,8 +1068,11 @@ static int lwmi_om_master_bind(struct device *dev)
 
 	priv->cd00_list = binder.cd00_list;
 	priv->cd01_list = binder.cd01_list;
-	if (!priv->cd00_list || !priv->cd01_list)
+	if (!priv->cd00_list || !priv->cd01_list) {
+		component_unbind_all(dev, NULL);
+
 		return -ENODEV;
+	}
 
 	lwmi_om_fan_info_collect_cd00(priv);
 
-- 
2.53.0


  parent reply	other threads:[~2026-04-06 20:14 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-04-06 20:13 [PATCH v8 00/16] platform-x86: lenovo-wmi: Add fixes and enhancement Derek J. Clark
2026-04-06 20:13 ` [PATCH v8 01/16] platform/x86: lenovo-wmi-helpers: Fix memory leak in lwmi_dev_evaluate_int() Derek J. Clark
2026-04-06 20:13 ` [PATCH v8 02/16] platform/x86: lenovo-wmi-other: Balance IDA id allocation and free Derek J. Clark
2026-04-06 20:13 ` Derek J. Clark [this message]
2026-04-06 20:13 ` [PATCH v8 04/16] platform/x86: lenovo-wmi-other: Zero initialize WMI arguments Derek J. Clark
2026-04-06 20:13 ` [PATCH v8 05/16] platform/x86: lenovo-wmi-other: Fix tunable_attr_01 struct members Derek J. Clark
2026-04-06 20:13 ` [PATCH v8 06/16] platform/x86: lenovo-wmi-other: Limit adding attributes to supported devices Derek J. Clark
2026-04-06 20:13 ` [PATCH v8 07/16] platform/x86: lenovo: Decouple lenovo-wmi-gamezone and lenovo-wmi-other Derek J. Clark
2026-04-06 20:13 ` [PATCH v8 08/16] platform/x86: lenovo-wmi-helpers: Move gamezone enums to wmi-helpers Derek J. Clark
2026-04-06 20:13 ` [PATCH v8 09/16] platform/x86: lenovo-wmi-other: Move LWMI_FAN_DIV Derek J. Clark
2026-04-06 20:13 ` [PATCH v8 10/16] platform/x86: lenovo-wmi-other: Add lwmi_attr_id() function Derek J. Clark
2026-04-06 20:13 ` [PATCH v8 11/16] platform/x86: lenovo-wmi-other: Add missing CPU tunable attributes Derek J. Clark
2026-04-06 20:13 ` [PATCH v8 12/16] platform/x86: lenovo-wmi-other: Add GPU " Derek J. Clark
2026-04-06 20:13 ` [PATCH v8 13/16] platform/x86: lenovo-wmi-other: Rename LWMI_OM_FW_ATTR_BASE_PATH Derek J. Clark
2026-04-06 20:13 ` [PATCH v8 14/16] platform/x86: lenovo-wmi-other: Add WMI battery charge limiting Derek J. Clark
2026-04-06 20:13 ` [PATCH v8 15/16] platform/x86: lenovo-wmi-helpers: Add helper for creating per-device debugfs dir Derek J. Clark
2026-04-06 20:14 ` [PATCH v8 16/16] platform/x86: lenovo-wmi-capdata: Add debugfs file for dumping capdata Derek J. Clark

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