From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: stable@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	patches@lists.linux.dev,
	Alison Schofield <alison.schofield@intel.com>,
	Jonathan Cameron <Jonathan.Cameron@huawei.com>,
	Zijun Hu <quic_zijuhu@quicinc.com>,
	Sasha Levin <sashal@kernel.org>
Subject: [PATCH 6.12 0703/1102] libnvdimm: Replace namespace_match() with device_find_child_by_name()
Date: Thu, 17 Sep 2026 16:10:46 +0100
Message-ID: <20260917151557.959922556@linuxfoundation.org>
In-Reply-To: <20260917151539.408551884@linuxfoundation.org>
References: <20260917151539.408551884@linuxfoundation.org>
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6.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Zijun Hu <quic_zijuhu@quicinc.com>

[ Upstream commit a7512bda7c176553536a5775fa9540223eef3c1f ]

Simplify nd_namespace_store() implementation by
using device_find_child_by_name().

Reviewed-by: Alison Schofield <alison.schofield@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com>
Link: https://lore.kernel.org/r/20241224-const_dfc_done-v5-1-6623037414d4@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stable-dep-of: b4fffa75c1d6 ("Documentation/hwmon: Document hwmon_notify_event()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/nvdimm/claim.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/drivers/nvdimm/claim.c b/drivers/nvdimm/claim.c
index 030dbde6b0882..9e84ab411564f 100644
--- a/drivers/nvdimm/claim.c
+++ b/drivers/nvdimm/claim.c
@@ -67,13 +67,6 @@ bool nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach,
 	return claimed;
 }
 
-static int namespace_match(struct device *dev, void *data)
-{
-	char *name = data;
-
-	return strcmp(name, dev_name(dev)) == 0;
-}
-
 static bool is_idle(struct device *dev, struct nd_namespace_common *ndns)
 {
 	struct nd_region *nd_region = to_nd_region(dev->parent);
@@ -168,7 +161,7 @@ ssize_t nd_namespace_store(struct device *dev,
 		goto out;
 	}
 
-	found = device_find_child(dev->parent, name, namespace_match);
+	found = device_find_child_by_name(dev->parent, name);
 	if (!found) {
 		dev_dbg(dev, "'%s' not found under %s\n", name,
 				dev_name(dev->parent));
-- 
2.53.0