linux-kernel - Re: [PATCH] firmware: qemu_fw_cfg: make kobj

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Date:   Fri, 3 Mar 2023 14:38:31 -0500
From:   "Gabriel L. Somlo" <somlo@....edu>
To:     Thomas Weißschuh <linux@...ssschuh.net>
Cc:     "Michael S. Tsirkin" <mst@...hat.com>, qemu-devel@...gnu.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] firmware: qemu_fw_cfg: make kobj_type structure constant

On Mon, Feb 27, 2023 at 03:19:56AM +0000, Thomas Weißschuh wrote:
> Since commit ee6d3dd4ed48 ("driver core: make kobj_type constant.")
> the driver core allows the usage of const struct kobj_type.
> 
> Take advantage of this to constify the structure definition to prevent
> modification at runtime.
> 
> Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
> ---
>  drivers/firmware/qemu_fw_cfg.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/firmware/qemu_fw_cfg.c b/drivers/firmware/qemu_fw_cfg.c
> index a69399a6b7c0..f41de793f41b 100644
> --- a/drivers/firmware/qemu_fw_cfg.c
> +++ b/drivers/firmware/qemu_fw_cfg.c
> @@ -452,7 +452,7 @@ static void fw_cfg_sysfs_release_entry(struct kobject *kobj)
>  }
>  
>  /* kobj_type: ties together all properties required to register an entry */
> -static struct kobj_type fw_cfg_sysfs_entry_ktype = {
> +static const struct kobj_type fw_cfg_sysfs_entry_ktype = {

Reviewed-by: Gabriel L. Somlo <somlo@....edu>

Thanks,
--Gabriel

>  	.default_groups = fw_cfg_sysfs_entry_groups,
>  	.sysfs_ops = &fw_cfg_sysfs_attr_ops,
>  	.release = fw_cfg_sysfs_release_entry,
> 
> ---
> base-commit: 2fcd07b7ccd5fd10b2120d298363e4e6c53ccf9c
> change-id: 20230227-kobj_type-firmware-qemu-7746b6320db0
> 
> Best regards,
> -- 
> Thomas Weißschuh <linux@...ssschuh.net>
>