i3c: Make i3c_bus_type const

rbmarliere · alexandrebelloni · commit 8f06fb458539 · 2024-02-19T21:23:28.000+01:00
Since commit d492cc2 ("driver core: device.h: make struct bus_type a const *"), the driver core can properly handle constant struct bus_type, move the i3c_bus_type variable to be a constant structure as well, placing it into read-only memory which can not be modified at runtime. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20240213-bus_cleanup-i3c-v1-1-403aea18f05a@marliere.net Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
diff --git a/drivers/i3c/internals.h b/drivers/i3c/internals.h
@@ -10,7 +10,7 @@
 
 #include <linux/i3c/master.h>
 
-extern struct bus_type i3c_bus_type;
+extern const struct bus_type i3c_bus_type;
 
 void i3c_bus_normaluse_lock(struct i3c_bus *bus);
 void i3c_bus_normaluse_unlock(struct i3c_bus *bus);
diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
@@ -335,7 +335,7 @@ static void i3c_device_remove(struct device *dev)
 	i3c_device_free_ibi(i3cdev);
 }
 
-struct bus_type i3c_bus_type = {
+const struct bus_type i3c_bus_type = {
 	.name = "i3c",
 	.match = i3c_device_match,
 	.probe = i3c_device_probe,

Original file line number	Diff line number	Diff line change
`@@ -335,7 +335,7 @@ static void i3c_device_remove(struct device *dev)`
`335`	`335`	`i3c_device_free_ibi(i3cdev);`
`336`	`336`	`}`
`337`	`337`
`338`		`-struct bus_type i3c_bus_type = {`
	`338`	`+const struct bus_type i3c_bus_type = {`
`339`	`339`	`.name = "i3c",`
`340`	`340`	`.match = i3c_device_match,`
`341`	`341`	`.probe = i3c_device_probe,`