linux-kernel - [PATCH 28/36] driver core: make the bus_type in struct device

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Date:   Mon, 13 Mar 2023 19:29:10 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     rafael@...nel.org, Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH 28/36] driver core: make the bus_type in struct device_driver constant

The pointer to struct bus_type in struct device_driver should only be
pointing to something that can never change now that the driver core has
fixed up the previously writable fields.  So mark it as a constant
pointer to enforce this and move forward with the goal of moving
bus_type into read-only memory.

Cc: "Rafael J. Wysocki" <rafael@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 include/linux/device/driver.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/device/driver.h b/include/linux/device/driver.h
index ceb0e477c2c8..0f22a6f46f8c 100644
--- a/include/linux/device/driver.h
+++ b/include/linux/device/driver.h
@@ -95,7 +95,7 @@ enum probe_type {
  */
 struct device_driver {
 	const char		*name;
-	struct bus_type		*bus;
+	const struct bus_type	*bus;
 
 	struct module		*owner;
 	const char		*mod_name;	/* used for built-in modules */
-- 
2.39.2