Re: [PATCH v2 03/14] platform/x86/intel/ifs: Remove image loading during init

Hans de Goede
2022-11-10T21:07:53Z

Hi,

On 11/7/22 23:53, Jithu Joseph wrote:
> IFS test image is unnecessarily loaded during driver initialization.
> Drop image loading during ifs_init() and improve module load time.
> With this change, user has to load one when starting the tests.
>
> As a consequence, make ifs_sem static as it is only used within sysfs.c
>
> Reviewed-by: Tony Luck <tony.luck@intel.com>
> Suggested-by: Hans de Goede <hdegoede@redhat.com>
> Signed-off-by: Jithu Joseph <jithu.joseph@intel.com>

Thanks, patch looks good to me:

Reviewed-by: Hans de Goede <hdegoede@redhat.com>

Regards,

Hans

> ---
> drivers/platform/x86/intel/ifs/ifs.h | 2 --
> drivers/platform/x86/intel/ifs/core.c | 6 +-----
> drivers/platform/x86/intel/ifs/sysfs.c | 2 +-
> 3 files changed, 2 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/platform/x86/intel/ifs/ifs.h b/drivers/platform/x86/intel/ifs/ifs.h
> index 73c8e91cf144..3ff1d9aaeaa9 100644
> --- a/drivers/platform/x86/intel/ifs/ifs.h
> +++ b/drivers/platform/x86/intel/ifs/ifs.h
> @@ -229,6 +229,4 @@ void ifs_load_firmware(struct device *dev);
> int do_core_test(int cpu, struct device *dev);
> const struct attribute_group **ifs_get_groups(void);
>
> -extern struct semaphore ifs_sem;
> -
> #endif
> diff --git a/drivers/platform/x86/intel/ifs/core.c b/drivers/platform/x86/intel/ifs/core.c
> index 27204e3d674d..5fb7f655c291 100644
> --- a/drivers/platform/x86/intel/ifs/core.c
> +++ b/drivers/platform/x86/intel/ifs/core.c
> @@ -51,12 +51,8 @@ static int __init ifs_init(void)
> ifs_device.misc.groups = ifs_get_groups();
>
> if ((msrval & BIT(ifs_device.data.integrity_cap_bit)) &&
> - !misc_register(&ifs_device.misc)) {
> - down(&ifs_sem);
> - ifs_load_firmware(ifs_device.misc.this_device);
> - up(&ifs_sem);
> + !misc_register(&ifs_device.misc))
> return 0;
> - }
>
> return -ENODEV;
> }
> diff --git a/drivers/platform/x86/intel/ifs/sysfs.c b/drivers/platform/x86/intel/ifs/sysfs.c
> index 37d8380d6fa8..65dd6fea5342 100644
> --- a/drivers/platform/x86/intel/ifs/sysfs.c
> +++ b/drivers/platform/x86/intel/ifs/sysfs.c
> @@ -13,7 +13,7 @@
> * Protects against simultaneous tests on multiple cores, or
> * reloading can file while a test is in progress
> */
> -DEFINE_SEMAPHORE(ifs_sem);
> +static DEFINE_SEMAPHORE(ifs_sem);
>
> /*
> * The sysfs interface to check additional details of last test