linux-kernel - Re: [PATCH AUTOSEL 5.16 36/52] PM: wakeup: simplify the output logic of pm_show

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Message-ID: <Yfzj56RiMMd79M26@kroah.com>
Date:   Fri, 4 Feb 2022 09:29:27 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Sasha Levin <sashal@...nel.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Lee Jones <lee.jones@...aro.org>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        rafael@...nel.org, pavel@....cz, len.brown@...el.com,
        linux-pm@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 5.16 36/52] PM: wakeup: simplify the output logic
 of pm_show_wakelocks()

On Thu, Feb 03, 2022 at 03:29:30PM -0500, Sasha Levin wrote:
> From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> 
> [ Upstream commit c9d967b2ce40d71e968eb839f36c936b8a9cf1ea ]
> 
> The buffer handling in pm_show_wakelocks() is tricky, and hopefully
> correct.  Ensure it really is correct by using sysfs_emit_at() which
> handles all of the tricky string handling logic in a PAGE_SIZE buffer
> for us automatically as this is a sysfs file being read from.
> 
> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Reviewed-by: Lee Jones <lee.jones@...aro.org>
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> Signed-off-by: Sasha Levin <sashal@...nel.org>
> ---
>  kernel/power/wakelock.c | 11 ++++-------
>  1 file changed, 4 insertions(+), 7 deletions(-)

This is already in a stable release, so no need to add it again.

thanks,

greg k-h