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Message-ID: <911429e0-3807-255a-4ab5-d89c6d6ce0d7@linux.intel.com>
Date: Tue, 29 Oct 2024 12:12:23 +0200 (EET)
From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To: Mario Limonciello <mario.limonciello@....com>
cc: Hans de Goede <hdegoede@...hat.com>,
"Rafael J . Wysocki" <rafael@...nel.org>, Len Brown <lenb@...nel.org>,
Maximilian Luz <luzmaximilian@...il.com>, Lee Chun-Yi <jlee@...e.com>,
Shyam Sundar S K <Shyam-sundar.S-k@....com>,
Corentin Chary <corentin.chary@...il.com>,
"Luke D . Jones" <luke@...nes.dev>, Ike Panhc <ike.pan@...onical.com>,
Henrique de Moraes Holschuh <hmh@....eng.br>,
Alexis Belmonte <alexbelm48@...il.com>,
Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
Ai Chao <aichao@...inos.cn>, Gergo Koteles <soyer@....hu>,
open list <linux-kernel@...r.kernel.org>,
"open list:ACPI" <linux-acpi@...r.kernel.org>,
"open list:MICROSOFT SURFACE PLATFORM PROFILE DRIVER" <platform-driver-x86@...r.kernel.org>,
"open list:THINKPAD ACPI EXTRAS DRIVER" <ibm-acpi-devel@...ts.sourceforge.net>,
Mark Pearson <mpearson-lenovo@...ebb.ca>,
Matthew Schwartz <matthew.schwartz@...ux.dev>
Subject: Re: [PATCH v2 05/15] ACPI: platform_profile: Move sanity check out
of the mutex
On Sun, 27 Oct 2024, Mario Limonciello wrote:
> The sanity check that the platform handler had choices set doesn't
> need the mutex taken. Move it to earlier in the registration.
>
> Tested-by: Matthew Schwartz <matthew.schwartz@...ux.dev>
> Signed-off-by: Mario Limonciello <mario.limonciello@....com>
> ---
> drivers/acpi/platform_profile.c | 13 ++++++-------
> 1 file changed, 6 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c
> index 0c60fc970b6e8..c20256bb39579 100644
> --- a/drivers/acpi/platform_profile.c
> +++ b/drivers/acpi/platform_profile.c
> @@ -180,6 +180,12 @@ int platform_profile_register(struct platform_profile_handler *pprof)
> {
> int err;
>
> + /* Sanity check the profile handler field are set */
> + if (!pprof || bitmap_empty(pprof->choices, PLATFORM_PROFILE_LAST) ||
> + !pprof->profile_set || !pprof->profile_get) {
While moving the line, please change the misleading indentation too
(you'd have probably done it based on my comment on v1 too but since
this series has changed things a bit, I'm noting it also against this
patch).
--
i.
> + return -EINVAL;
> + }
> +
> mutex_lock(&profile_lock);
> /* We can only have one active profile */
> if (cur_profile) {
> @@ -187,13 +193,6 @@ int platform_profile_register(struct platform_profile_handler *pprof)
> return -EEXIST;
> }
>
> - /* Sanity check the profile handler field are set */
> - if (!pprof || bitmap_empty(pprof->choices, PLATFORM_PROFILE_LAST) ||
> - !pprof->profile_set || !pprof->profile_get) {
> - mutex_unlock(&profile_lock);
> - return -EINVAL;
> - }
> -
> err = sysfs_create_group(acpi_kobj, &platform_profile_group);
> if (err) {
> mutex_unlock(&profile_lock);
>
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