From: "Ricardo B. Marliere" <ricardo@marliere.net>
To: "Rafael J. Wysocki" <rafael@kernel.org>,
Len Brown <lenb@kernel.org>,
Robert Moore <robert.moore@intel.com>
Cc: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org,
acpica-devel@lists.linux.dev,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Ricardo B. Marliere" <ricardo@marliere.net>
Subject: [PATCH] ACPI: bus: make acpi_bus_type const
Date: Sun, 11 Feb 2024 12:37:11 -0300 [thread overview]
Message-ID: <20240211-bus_cleanup-acpi-v1-1-08540c6e9458@marliere.net> (raw)
Now that the driver core can properly handle constant struct bus_type,
move the acpi_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>
---
drivers/acpi/bus.c | 2 +-
include/acpi/acpi_bus.h | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 569bd15f211b..d9fa730416f1 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -1097,7 +1097,7 @@ static void acpi_device_remove(struct device *dev)
put_device(dev);
}
-struct bus_type acpi_bus_type = {
+const struct bus_type acpi_bus_type = {
.name = "acpi",
.match = acpi_bus_match,
.probe = acpi_device_probe,
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index e4d24d3f9abb..f67aa93ba53e 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -582,7 +582,7 @@ void acpi_initialize_hp_context(struct acpi_device *adev,
void (*uevent)(struct acpi_device *, u32));
/* acpi_device.dev.bus == &acpi_bus_type */
-extern struct bus_type acpi_bus_type;
+extern const struct bus_type acpi_bus_type;
int acpi_bus_for_each_dev(int (*fn)(struct device *, void *), void *data);
int acpi_dev_for_each_child(struct acpi_device *adev,
---
base-commit: c3c4923f2082353762e8f46dec6e3b0f165a1606
change-id: 20240211-bus_cleanup-acpi-7ad5cc04089c
Best regards,
--
Ricardo B. Marliere <ricardo@marliere.net>
next reply other threads:[~2024-02-11 15:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-11 15:37 Ricardo B. Marliere [this message]
2024-02-12 10:44 ` [PATCH] ACPI: bus: make acpi_bus_type const Greg Kroah-Hartman
2024-02-12 13:44 ` Rafael J. Wysocki
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