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From: "Ricardo B. Marliere" <ricardo@marliere.net>
Date: Tue, 05 Mar 2024 16:55:24 -0300
Subject: [PATCH wpan-next] wifi: cfg802154: make wpan_phy_class constant
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Message-Id: <20240305-class_cleanup-wpan-v1-1-376f751fd481@marliere.net>
To: Alexander Aring <alex.aring@gmail.com>, 
 Stefan Schmidt <stefan@datenfreihafen.org>, 
 Miquel Raynal <miquel.raynal@bootlin.com>, 
 "David S. Miller" <davem@davemloft.net>, Eric Dumazet <edumazet@google.com>, 
 Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>
Cc: linux-wpan@vger.kernel.org, netdev@vger.kernel.org, 
 linux-kernel@vger.kernel.org, 
 Greg Kroah-Hartman <gregkh@linuxfoundation.org>, 
 "Ricardo B. Marliere" <ricardo@marliere.net>

Since commit 43a7206b0963 ("driver core: class: make class_register() take
a const *"), the driver core allows for struct class to be in read-only
memory, so move the wpan_phy_class structure to be declared at build time
placing it into read-only memory, instead of having to be dynamically
allocated at boot time.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
---
 net/ieee802154/sysfs.c | 2 +-
 net/ieee802154/sysfs.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/ieee802154/sysfs.c b/net/ieee802154/sysfs.c
index d2903933805c..6708160ebf9f 100644
--- a/net/ieee802154/sysfs.c
+++ b/net/ieee802154/sysfs.c
@@ -93,7 +93,7 @@ static SIMPLE_DEV_PM_OPS(wpan_phy_pm_ops, wpan_phy_suspend, wpan_phy_resume);
 #define WPAN_PHY_PM_OPS NULL
 #endif
 
-struct class wpan_phy_class = {
+const struct class wpan_phy_class = {
 	.name = "ieee802154",
 	.dev_release = wpan_phy_release,
 	.dev_groups = pmib_groups,
diff --git a/net/ieee802154/sysfs.h b/net/ieee802154/sysfs.h
index 337545b639e9..69961e166257 100644
--- a/net/ieee802154/sysfs.h
+++ b/net/ieee802154/sysfs.h
@@ -5,6 +5,6 @@
 int wpan_phy_sysfs_init(void);
 void wpan_phy_sysfs_exit(void);
 
-extern struct class wpan_phy_class;
+extern const struct class wpan_phy_class;
 
 #endif /* __IEEE802154_SYSFS_H */

---
base-commit: 42683294cc0a9ba010de5d978fd23fd1e778b192
change-id: 20240305-class_cleanup-wpan-f299173274b0

Best regards,
-- 
Ricardo B. Marliere <ricardo@marliere.net>