Now that the driver core can properly handle constant struct bus_type,
move the dio_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 <[email protected]>
Suggested-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Ricardo B. Marliere <[email protected]>
---
Changes in v2:
- Added missing 'const' to dio.h
- Link to v1: https://lore.kernel.org/r/[email protected]
---
drivers/dio/dio-driver.c | 2 +-
include/linux/dio.h | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/dio/dio-driver.c b/drivers/dio/dio-driver.c
index 69c46935ffc7..2d9fa6011945 100644
--- a/drivers/dio/dio-driver.c
+++ b/drivers/dio/dio-driver.c
@@ -123,7 +123,7 @@ static int dio_bus_match(struct device *dev, struct device_driver *drv)
}
-struct bus_type dio_bus_type = {
+const struct bus_type dio_bus_type = {
.name = "dio",
.match = dio_bus_match,
.probe = dio_device_probe,
diff --git a/include/linux/dio.h b/include/linux/dio.h
index 5abd07361eb5..2b5923909f96 100644
--- a/include/linux/dio.h
+++ b/include/linux/dio.h
@@ -68,7 +68,7 @@ struct dio_bus {
};
extern struct dio_bus dio_bus; /* Single DIO bus */
-extern struct bus_type dio_bus_type;
+extern const struct bus_type dio_bus_type;
/*
* DIO device IDs
---
base-commit: 047371968ffc470769f541d6933e262dc7085456
change-id: 20240211-bus_cleanup-dio-6cafa80e759b
Best regards,
--
Ricardo B. Marliere <[email protected]>
On Mon, Feb 12, 2024 at 08:41:01AM -0300, Ricardo B. Marliere wrote:
> Now that the driver core can properly handle constant struct bus_type,
> move the dio_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 <[email protected]>
> Suggested-by: Greg Kroah-Hartman <[email protected]>
> Signed-off-by: Ricardo B. Marliere <[email protected]>
Reviewed-by: Greg Kroah-Hartman <[email protected]>
Hi Greg,
On 13 Feb 12:07, Greg Kroah-Hartman wrote:
> On Mon, Feb 12, 2024 at 08:41:01AM -0300, Ricardo B. Marliere wrote:
> > Now that the driver core can properly handle constant struct bus_type,
> > move the dio_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 <[email protected]>
> > Suggested-by: Greg Kroah-Hartman <[email protected]>
> > Signed-off-by: Ricardo B. Marliere <[email protected]>
>
> Reviewed-by: Greg Kroah-Hartman <[email protected]>
I didn't find anyone to take in this patch. Can you please check and if
that's the case take it through one of your trees?
Thanks for reviewing,
- Ricardo.