linux-kernel - Re: [RFC][PATCH v2 05/31] timers: ACPI: Use del_timer

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Date:   Tue, 1 Nov 2022 03:11:36 +0200
From:   Jarkko Sakkinen <jarkko@...nel.org>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     linux-kernel@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Stephen Boyd <sboyd@...nel.org>,
        Guenter Roeck <linux@...ck-us.net>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>, James Morse <james.morse@....com>,
        Tony Luck <tony.luck@...el.com>,
        Borislav Petkov <bp@...en8.de>,
        Shuai Xue <xueshuai@...ux.alibaba.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        linux-acpi@...r.kernel.org
Subject: Re: [RFC][PATCH v2 05/31] timers: ACPI: Use del_timer_shutdown()
 before freeing timer

On Thu, Oct 27, 2022 at 11:05:30AM -0400, Steven Rostedt wrote:
> From: "Steven Rostedt (Google)" <rostedt@...dmis.org>
> 
> Before a timer is freed, del_timer_shutdown() must be called.
> 
> Link: https://lore.kernel.org/all/20220407161745.7d6754b3@gandalf.local.home/
> 
> Cc: "Rafael J. Wysocki" <rafael@...nel.org>
> Cc: Len Brown <lenb@...nel.org>
> Cc: James Morse <james.morse@....com>
> Cc: Tony Luck <tony.luck@...el.com>
> Cc: Borislav Petkov <bp@...en8.de>
> Cc: Shuai Xue <xueshuai@...ux.alibaba.com>
> Cc: Dave Hansen <dave.hansen@...ux.intel.com>
> Cc: Jarkko Sakkinen <jarkko@...nel.org>
> Cc: linux-acpi@...r.kernel.org
> Signed-off-by: Steven Rostedt (Google) <rostedt@...dmis.org>
> ---
>  drivers/acpi/apei/ghes.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
> index 80ad530583c9..916b952b14d0 100644
> --- a/drivers/acpi/apei/ghes.c
> +++ b/drivers/acpi/apei/ghes.c
> @@ -1405,7 +1405,7 @@ static int ghes_remove(struct platform_device *ghes_dev)
>  	ghes->flags |= GHES_EXITING;
>  	switch (generic->notify.type) {
>  	case ACPI_HEST_NOTIFY_POLLED:
> -		del_timer_sync(&ghes->timer);
> +		del_timer_shutdown(&ghes->timer);
>  		break;
>  	case ACPI_HEST_NOTIFY_EXTERNAL:
>  		free_irq(ghes->irq, ghes);
> -- 
> 2.35.1


Acked-by: Jarkko Sakkinen <jarkko@...nel.org>

BR, Jarkko