[PATCH 0/2] platform: x86: struct bus_type cleanup

[PATCH 0/2] platform: x86: struct bus_type cleanup

[Ricardo B. Marliere]

This series is part of an effort to cleanup the users of the driver
core, as can be seen in many recent patches authored by Greg across the
tree (e.g. [1]). Specifically, this series is part of the task of
splitting one of his TODOs [2].

---
[1]: https://lore.kernel.org/lkml/?q=f%3Agregkh%40linuxfoundation.org+s%3A%22make%22+and+s%3A%22const%22
[2]: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git/commit/?h=bus_cleanup&id=26105f537f0c60eacfeb430abd2e05d7ddcdd8aa

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>

---
Ricardo B. Marliere (2):
      platform: x86: wmi: make wmi_bus_type const
      platform: x86: ibm_rtl: make rtl_subsys const

 drivers/platform/x86/ibm_rtl.c | 2 +-
 drivers/platform/x86/wmi.c     | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)
---
base-commit: 682c259a849610c7864cc75d52415c782c78653a
change-id: 20240204-bus_cleanup-platform-drivers-x86-40e6e6b4773a

Best regards,
-- 
Ricardo B. Marliere <ricardo@marliere.net>

[PATCH 1/2] platform: x86: wmi: make wmi_bus_type const

[Ricardo B. Marliere]

Now that the driver core can properly handle constant struct bus_type,
move the wmi_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/platform/x86/wmi.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
index 7ef1e82dc61c..859dfff515d0 100644
--- a/drivers/platform/x86/wmi.c
+++ b/drivers/platform/x86/wmi.c
@@ -219,7 +219,7 @@ static int wmidev_match_guid(struct device *dev, const void *data)
 	return 0;
 }
 
-static struct bus_type wmi_bus_type;
+static const struct bus_type wmi_bus_type;
 
 static struct wmi_device *wmi_find_device_by_guid(const char *guid_string)
 {
@@ -899,7 +899,7 @@ static struct class wmi_bus_class = {
 	.name = "wmi_bus",
 };
 
-static struct bus_type wmi_bus_type = {
+static const struct bus_type wmi_bus_type = {
 	.name = "wmi",
 	.dev_groups = wmi_groups,
 	.match = wmi_dev_match,

-- 
2.43.0

[PATCH 2/2] platform: x86: ibm_rtl: make rtl_subsys const

[Ricardo B. Marliere]

Now that the driver core can properly handle constant struct bus_type,
move the rtl_subsys 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/platform/x86/ibm_rtl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/platform/x86/ibm_rtl.c b/drivers/platform/x86/ibm_rtl.c
index 2ab7d9ac542d..1d4bbae115f1 100644
--- a/drivers/platform/x86/ibm_rtl.c
+++ b/drivers/platform/x86/ibm_rtl.c
@@ -179,7 +179,7 @@ static ssize_t rtl_set_state(struct device *dev,
 	return ret;
 }
 
-static struct bus_type rtl_subsys = {
+static const struct bus_type rtl_subsys = {
 	.name = "ibm_rtl",
 	.dev_name = "ibm_rtl",
 };

-- 
2.43.0

Re: [PATCH 0/2] platform: x86: struct bus_type cleanup

[Greg Kroah-Hartman]

On Sun, Feb 04, 2024 at 11:40:15AM -0300, Ricardo B. Marliere wrote:
> This series is part of an effort to cleanup the users of the driver
> core, as can be seen in many recent patches authored by Greg across the
> tree (e.g. [1]). Specifically, this series is part of the task of
> splitting one of his TODOs [2].
> 
> ---
> [1]: https://lore.kernel.org/lkml/?q=f%3Agregkh%40linuxfoundation.org+s%3A%22make%22+and+s%3A%22const%22
> [2]: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git/commit/?h=bus_cleanup&id=26105f537f0c60eacfeb430abd2e05d7ddcdd8aa
> 
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
> 

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Re: [PATCH 1/2] platform: x86: wmi: make wmi_bus_type const

[Armin Wolf]

Am 04.02.24 um 15:40 schrieb Ricardo B. Marliere:

> Now that the driver core can properly handle constant struct bus_type,
> move the wmi_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/platform/x86/wmi.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
> index 7ef1e82dc61c..859dfff515d0 100644
> --- a/drivers/platform/x86/wmi.c
> +++ b/drivers/platform/x86/wmi.c
> @@ -219,7 +219,7 @@ static int wmidev_match_guid(struct device *dev, const void *data)
>   	return 0;
>   }
>
> -static struct bus_type wmi_bus_type;
> +static const struct bus_type wmi_bus_type;
>
>   static struct wmi_device *wmi_find_device_by_guid(const char *guid_string)
>   {
> @@ -899,7 +899,7 @@ static struct class wmi_bus_class = {
>   	.name = "wmi_bus",
>   };
>
> -static struct bus_type wmi_bus_type = {
> +static const struct bus_type wmi_bus_type = {
>   	.name = "wmi",
>   	.dev_groups = wmi_groups,
>   	.match = wmi_dev_match,
>
Reviewed-by: Armin Wolf <W_Armin@gmx.de>

Re: [PATCH 0/2] platform: x86: struct bus_type cleanup

[Ilpo Järvinen]

On Sun, 04 Feb 2024 11:40:15 -0300, Ricardo B. Marliere wrote:

> This series is part of an effort to cleanup the users of the driver
> core, as can be seen in many recent patches authored by Greg across the
> tree (e.g. [1]). Specifically, this series is part of the task of
> splitting one of his TODOs [2].
> 


Thank you for your contribution, it has been applied to my local
review-ilpo branch. Note it will show up in the public
platform-drivers-x86/review-ilpo branch only once I've pushed my
local branch there, which might take a while.

The list of commits applied:
[1/2] platform: x86: wmi: make wmi_bus_type const
      commit: 10fdfd13a35994ac1dcc3003d4046cb1955e66a8
[2/2] platform: x86: ibm_rtl: make rtl_subsys const
      commit: 41b43c75121208a9e4e84fd148f918bddb3f5d1f

--
 i.