diff mbox series

macintosh: adb: make adb_dev_class constant

Message ID 20240305-macintosh-v1-1-9c3f4f882045@marliere.net (mailing list archive)
State Accepted
Commit 83bc680e87292f78c6e823100e417d58a66dcb06
Headers show
Series macintosh: adb: make adb_dev_class constant | expand

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Commit Message

Ricardo B. Marliere March 5, 2024, 8:13 p.m. UTC
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 adb_dev_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>
---
 drivers/macintosh/adb.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)


---
base-commit: 90d35da658da8cff0d4ecbb5113f5fac9d00eb72
change-id: 20240305-macintosh-9b027d413a05

Best regards,

Comments

Michael Ellerman March 13, 2024, 1:19 p.m. UTC | #1
On Tue, 05 Mar 2024 17:13:48 -0300, Ricardo B. Marliere wrote:
> 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 adb_dev_class structure to be declared at build time
> placing it into read-only memory, instead of having to be dynamically
> allocated at boot time.
> 
> 
> [...]

Applied to powerpc/next.

[1/1] macintosh: adb: make adb_dev_class constant
      https://git.kernel.org/powerpc/c/83bc680e87292f78c6e823100e417d58a66dcb06

cheers
diff mbox series

Patch

diff --git a/drivers/macintosh/adb.c b/drivers/macintosh/adb.c
index 057b0221f695..b0407c5fadb2 100644
--- a/drivers/macintosh/adb.c
+++ b/drivers/macintosh/adb.c
@@ -74,7 +74,9 @@  static struct adb_driver *adb_driver_list[] = {
 	NULL
 };
 
-static struct class *adb_dev_class;
+static const struct class adb_dev_class = {
+	.name = "adb",
+};
 
 static struct adb_driver *adb_controller;
 BLOCKING_NOTIFIER_HEAD(adb_client_list);
@@ -888,10 +890,10 @@  adbdev_init(void)
 		return;
 	}
 
-	adb_dev_class = class_create("adb");
-	if (IS_ERR(adb_dev_class))
+	if (class_register(&adb_dev_class))
 		return;
-	device_create(adb_dev_class, NULL, MKDEV(ADB_MAJOR, 0), NULL, "adb");
+
+	device_create(&adb_dev_class, NULL, MKDEV(ADB_MAJOR, 0), NULL, "adb");
 
 	platform_device_register(&adb_pfdev);
 	platform_driver_probe(&adb_pfdrv, adb_dummy_probe);