[PATCH 0/3] drivers: scsi: struct bus_type cleanup

[PATCH 0/3] drivers: scsi: 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 (3):
      scsi: fcoe: make fcoe_bus_type const
      scsi: iscsi: make iscsi_flashnode_bus const
      scsi: scsi_debug: make pseudo_lld_bus const

 drivers/scsi/fcoe/fcoe_sysfs.c      | 4 ++--
 drivers/scsi/scsi_debug.c           | 4 ++--
 drivers/scsi/scsi_transport_iscsi.c | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)
---
base-commit: 890d900e7fec7f7956c26bd47b4f0f07a0a507b1
change-id: 20240203-bus_cleanup-scsi-7c22edb73af4

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

[PATCH 1/3] scsi: fcoe: make fcoe_bus_type const

[Ricardo B. Marliere]

Now that the driver core can properly handle constant struct bus_type,
move the fcoe_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/scsi/fcoe/fcoe_sysfs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/fcoe/fcoe_sysfs.c b/drivers/scsi/fcoe/fcoe_sysfs.c
index c64a085a7ee2..453665ac6020 100644
--- a/drivers/scsi/fcoe/fcoe_sysfs.c
+++ b/drivers/scsi/fcoe/fcoe_sysfs.c
@@ -597,7 +597,7 @@ static const struct attribute_group *fcoe_fcf_attr_groups[] = {
 	NULL,
 };
 
-static struct bus_type fcoe_bus_type;
+static const struct bus_type fcoe_bus_type;
 
 static int fcoe_bus_match(struct device *dev,
 			  struct device_driver *drv)
@@ -664,7 +664,7 @@ static struct attribute *fcoe_bus_attrs[] = {
 };
 ATTRIBUTE_GROUPS(fcoe_bus);
 
-static struct bus_type fcoe_bus_type = {
+static const struct bus_type fcoe_bus_type = {
 	.name = "fcoe",
 	.match = &fcoe_bus_match,
 	.bus_groups = fcoe_bus_groups,

-- 
2.43.0

[PATCH 2/3] scsi: iscsi: make iscsi_flashnode_bus const

[Ricardo B. Marliere]

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

diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index 3075b2ddf7a6..af3ac6346796 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -1201,7 +1201,7 @@ static const struct device_type iscsi_flashnode_conn_dev_type = {
 	.release = iscsi_flashnode_conn_release,
 };
 
-static struct bus_type iscsi_flashnode_bus;
+static const struct bus_type iscsi_flashnode_bus;
 
 int iscsi_flashnode_bus_match(struct device *dev,
 				     struct device_driver *drv)
@@ -1212,7 +1212,7 @@ int iscsi_flashnode_bus_match(struct device *dev,
 }
 EXPORT_SYMBOL_GPL(iscsi_flashnode_bus_match);
 
-static struct bus_type iscsi_flashnode_bus = {
+static const struct bus_type iscsi_flashnode_bus = {
 	.name = "iscsi_flashnode",
 	.match = &iscsi_flashnode_bus_match,
 };

-- 
2.43.0

[PATCH 3/3] scsi: scsi_debug: make pseudo_lld_bus const

[Ricardo B. Marliere]

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

diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index d03d66f11493..914d9c12e741 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -899,7 +899,7 @@ static int poll_queues; /* iouring iopoll interface.*/
 static char sdebug_proc_name[] = MY_NAME;
 static const char *my_name = MY_NAME;
 
-static struct bus_type pseudo_lld_bus;
+static const struct bus_type pseudo_lld_bus;
 
 static struct device_driver sdebug_driverfs_driver = {
 	.name 		= sdebug_proc_name,
@@ -8405,7 +8405,7 @@ static void sdebug_driver_remove(struct device *dev)
 	scsi_host_put(sdbg_host->shost);
 }
 
-static struct bus_type pseudo_lld_bus = {
+static const struct bus_type pseudo_lld_bus = {
 	.name = "pseudo",
 	.probe = sdebug_driver_probe,
 	.remove = sdebug_driver_remove,

-- 
2.43.0

Re: [PATCH 2/3] scsi: iscsi: make iscsi_flashnode_bus const

[Lee Duncan]

On Sat, Feb 3, 2024 at 10:38 AM Ricardo B. Marliere
<ricardo@marliere.net> wrote:
>
> Now that the driver core can properly handle constant struct bus_type,
> move the iscsi_flashnode_bus 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/scsi/scsi_transport_iscsi.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
> index 3075b2ddf7a6..af3ac6346796 100644
> --- a/drivers/scsi/scsi_transport_iscsi.c
> +++ b/drivers/scsi/scsi_transport_iscsi.c
> @@ -1201,7 +1201,7 @@ static const struct device_type iscsi_flashnode_conn_dev_type = {
>         .release = iscsi_flashnode_conn_release,
>  };
>
> -static struct bus_type iscsi_flashnode_bus;
> +static const struct bus_type iscsi_flashnode_bus;
>
>  int iscsi_flashnode_bus_match(struct device *dev,
>                                      struct device_driver *drv)
> @@ -1212,7 +1212,7 @@ int iscsi_flashnode_bus_match(struct device *dev,
>  }
>  EXPORT_SYMBOL_GPL(iscsi_flashnode_bus_match);
>
> -static struct bus_type iscsi_flashnode_bus = {
> +static const struct bus_type iscsi_flashnode_bus = {
>         .name = "iscsi_flashnode",
>         .match = &iscsi_flashnode_bus_match,
>  };
>
> --
> 2.43.0
>

Reviewed-by: Lee Duncan <lduncan@suse.com>

Re: [PATCH 0/3] drivers: scsi: struct bus_type cleanup

[Greg Kroah-Hartman]

On Sat, Feb 03, 2024 at 03:38:59PM -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 0/3] drivers: scsi: struct bus_type cleanup

[Martin K. Petersen]

Ricardo,

> 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].

Applied to 6.9/scsi-staging, thanks!

-- 
Martin K. Petersen	Oracle Linux Engineering

Re: [PATCH 0/3] drivers: scsi: struct bus_type cleanup

[Martin K. Petersen]

On Sat, 03 Feb 2024 15:38:59 -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].
> 

Applied to 6.9/scsi-queue, thanks!

[1/3] scsi: fcoe: make fcoe_bus_type const
      https://git.kernel.org/mkp/scsi/c/4dbde797b946
[2/3] scsi: iscsi: make iscsi_flashnode_bus const
      https://git.kernel.org/mkp/scsi/c/824ec98b1b55
[3/3] scsi: scsi_debug: make pseudo_lld_bus const
      https://git.kernel.org/mkp/scsi/c/ac0dd0f33adb

-- 
Martin K. Petersen	Oracle Linux Engineering