linux-kernel - Re: [PATCH 1/1] platform/x86: think-lmi: Convert container

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Date: Mon, 15 Apr 2024 16:11:13 +0200
From: Hans de Goede <hdegoede@...hat.com>
To: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
 Mark Pearson <markpearson@...ovo.com>, platform-driver-x86@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] platform/x86: think-lmi: Convert container_of()
 macros to static inline

Hi,

On 4/12/24 3:09 PM, Ilpo Järvinen wrote:
> The macros to_tlmi_pwd_setting() and to_tlmi_attr_setting() are fragile
> because they expect the variable name to be 'kobj', otherwise the build
> will fail because container_of()'s 3rd parameter (member) is taken from
> the parameter given to the macro.
> 
> While at it, move them into a more logical place.
> 
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>

Thank you for your patch, I've applied this patch to my review-hans 
branch:
https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=review-hans

Note it will show up in my review-hans branch once I've pushed my
local branch there, which might take a while.

Once I've run some tests on this branch the patches there will be
added to the platform-drivers-x86/for-next branch and eventually
will be included in the pdx86 pull-request to Linus for the next
merge-window.

Regards,

Hans



> ---
>  drivers/platform/x86/think-lmi.c | 13 ++++++++++---
>  1 file changed, 10 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/platform/x86/think-lmi.c b/drivers/platform/x86/think-lmi.c
> index 9345316b45db..0f2264bb7577 100644
> --- a/drivers/platform/x86/think-lmi.c
> +++ b/drivers/platform/x86/think-lmi.c
> @@ -175,9 +175,6 @@ MODULE_PARM_DESC(debug_support, "Enable debug command support");
>  #define TLMI_SMP_PWD BIT(6) /* System Management */
>  #define TLMI_CERT    BIT(7) /* Certificate Based */
>  
> -#define to_tlmi_pwd_setting(kobj)  container_of(kobj, struct tlmi_pwd_setting, kobj)
> -#define to_tlmi_attr_setting(kobj)  container_of(kobj, struct tlmi_attr_setting, kobj)
> -
>  static const struct tlmi_err_codes tlmi_errs[] = {
>  	{"Success", 0},
>  	{"Not Supported", -EOPNOTSUPP},
> @@ -198,6 +195,16 @@ static struct think_lmi tlmi_priv;
>  static const struct class *fw_attr_class;
>  static DEFINE_MUTEX(tlmi_mutex);
>  
> +static inline struct tlmi_pwd_setting *to_tlmi_pwd_setting(struct kobject *kobj)
> +{
> +	return container_of(kobj, struct tlmi_pwd_setting, kobj);
> +}
> +
> +static inline struct tlmi_attr_setting *to_tlmi_attr_setting(struct kobject *kobj)
> +{
> +	return container_of(kobj, struct tlmi_attr_setting, kobj);
> +}
> +
>  /* Convert BIOS WMI error string to suitable error code */
>  static int tlmi_errstr_to_err(const char *errstr)
>  {