linux-kernel - [PATCH v2 11/32] libnvdimm: Simplify nd_namespace

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Message-Id: <20241203-const_dfc_done-v2-11-7436a98c497f@quicinc.com>
Date: Tue, 03 Dec 2024 08:33:33 +0800
From: Zijun Hu <zijun_hu@...oud.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 "Rafael J. Wysocki" <rafael@...nel.org>, 
 Chun-Kuang Hu <chunkuang.hu@...nel.org>, 
 Philipp Zabel <p.zabel@...gutronix.de>, David Airlie <airlied@...il.com>, 
 Simona Vetter <simona@...ll.ch>, Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, 
 Jean Delvare <jdelvare@...e.com>, Guenter Roeck <linux@...ck-us.net>, 
 Martin Tuma <martin.tuma@...iteqautomotive.com>, 
 Mauro Carvalho Chehab <mchehab@...nel.org>, 
 Andreas Noever <andreas.noever@...il.com>, 
 Michael Jamet <michael.jamet@...el.com>, 
 Mika Westerberg <mika.westerberg@...ux.intel.com>, 
 Yehezkel Bernat <YehezkelShB@...il.com>, 
 Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, Andrew Lunn <andrew@...n.ch>, 
 Vladimir Oltean <olteanv@...il.com>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Simon Horman <horms@...nel.org>, 
 Uwe Kleine-König <ukleinek@...nel.org>, 
 Dan Williams <dan.j.williams@...el.com>, 
 Vishal Verma <vishal.l.verma@...el.com>, Dave Jiang <dave.jiang@...el.com>, 
 Ira Weiny <ira.weiny@...el.com>, Takashi Sakamoto <o-takashi@...amocchi.jp>, 
 Jiri Slaby <jirislaby@...nel.org>, 
 Heikki Krogerus <heikki.krogerus@...ux.intel.com>, 
 Srinivas Kandagatla <srinivas.kandagatla@...aro.org>, 
 Lee Duncan <lduncan@...e.com>, Chris Leech <cleech@...hat.com>, 
 Mike Christie <michael.christie@...cle.com>, 
 "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>, 
 "Martin K. Petersen" <martin.petersen@...cle.com>, 
 Nilesh Javali <njavali@...vell.com>, 
 Manish Rangankar <mrangankar@...vell.com>, 
 GR-QLogic-Storage-Upstream@...vell.com, Davidlohr Bueso <dave@...olabs.net>, 
 Jonathan Cameron <jonathan.cameron@...wei.com>, 
 Alison Schofield <alison.schofield@...el.com>, 
 Andreas Larsson <andreas@...sler.com>, Stuart Yoder <stuyoder@...il.com>, 
 Laurentiu Tudor <laurentiu.tudor@....com>, Jens Axboe <axboe@...nel.dk>, 
 Sudeep Holla <sudeep.holla@....com>, 
 Cristian Marussi <cristian.marussi@....com>, 
 Ard Biesheuvel <ardb@...nel.org>, Bjorn Andersson <andersson@...nel.org>, 
 Mathieu Poirier <mathieu.poirier@...aro.org>
Cc: Zijun Hu <zijun_hu@...oud.com>, linux-kernel@...r.kernel.org, 
 dri-devel@...ts.freedesktop.org, linux-mediatek@...ts.infradead.org, 
 linux-arm-kernel@...ts.infradead.org, linux-hwmon@...r.kernel.org, 
 linux-media@...r.kernel.org, linux-usb@...r.kernel.org, 
 linux-gpio@...r.kernel.org, netdev@...r.kernel.org, 
 linux-pwm@...r.kernel.org, nvdimm@...ts.linux.dev, 
 linux1394-devel@...ts.sourceforge.net, linux-serial@...r.kernel.org, 
 linux-sound@...r.kernel.org, open-iscsi@...glegroups.com, 
 linux-scsi@...r.kernel.org, linux-cxl@...r.kernel.org, 
 sparclinux@...r.kernel.org, linux-block@...r.kernel.org, 
 arm-scmi@...r.kernel.org, linux-efi@...r.kernel.org, 
 linux-remoteproc@...r.kernel.org, Zijun Hu <quic_zijuhu@...cinc.com>
Subject: [PATCH v2 11/32] libnvdimm: Simplify nd_namespace_store()
 implementation

From: Zijun Hu <quic_zijuhu@...cinc.com>

Simplify nd_namespace_store() implementation by device_find_child_by_name()

Signed-off-by: Zijun Hu <quic_zijuhu@...cinc.com>
---
 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 030dbde6b0882050c90fb8db106ec15b1baef7ca..9e84ab411564f9d5e7ceb687c6491562564552e3 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));

-- 
2.34.1