From: Thierry Reding <thierry.reding@gmail.com>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
David Lechner <david@lechnology.com>,
Frieder Schrempf <frieder.schrempf@exceet.de>
Subject: Re: [PATCH v2 4/7] Input: pwm-beeper - fix race when suspending
Date: Fri, 20 Jan 2017 11:14:21 +0100 [thread overview]
Message-ID: <20170120101421.GD3824@ulmo.ba.sec> (raw)
In-Reply-To: <20170119224057.9995-4-dmitry.torokhov@gmail.com>
[-- Attachment #1: Type: text/plain, Size: 695 bytes --]
On Thu, Jan 19, 2017 at 02:40:54PM -0800, Dmitry Torokhov wrote:
> Usually userspace sends SND_BELL and SND_TONE events, and by the time
> pwm_beeper_suspend() runs userpsace is already frozen, but theoretically
> in-kernel users may send these events too, and that may cause
> pwm_beeper_event() scheduling another work after we canceled it.
>
> Let's introduce a "suspended" flag and check it in pwm_beeper_event() to
> avoid this race.
>
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
> ---
> drivers/input/misc/pwm-beeper.c | 21 ++++++++++++++++++---
> 1 file changed, 18 insertions(+), 3 deletions(-)
Reviewed-by: Thierry Reding <thierry.reding@gmail.com>
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]
next prev parent reply other threads:[~2017-01-20 10:14 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-19 22:40 [PATCH v2 1/7] Input: pwm-beeper - remove calls to legacy pwm_request API Dmitry Torokhov
2017-01-19 22:40 ` [PATCH v2 2/7] Input: pwm-beeper - switch to using managed resources Dmitry Torokhov
2017-01-20 10:10 ` Thierry Reding
2017-01-19 22:40 ` [PATCH v2 3/7] Input: pwm-beeper - use input_set_capability() Dmitry Torokhov
2017-01-20 10:12 ` Thierry Reding
2017-01-19 22:40 ` [PATCH v2 4/7] Input: pwm-beeper - fix race when suspending Dmitry Torokhov
2017-01-20 10:14 ` Thierry Reding [this message]
2017-01-19 22:40 ` [PATCH v2 5/7] Input: pwm-beeper - suppress error message on probe defer Dmitry Torokhov
2017-01-20 10:16 ` Thierry Reding
2017-01-20 18:43 ` David Lechner
2017-01-19 22:40 ` [PATCH v2 6/7] Input: pwm-beeper - add optional amplifier regulator Dmitry Torokhov
2017-01-20 10:19 ` Thierry Reding
2017-01-20 17:47 ` Dmitry Torokhov
2017-01-19 22:40 ` [PATCH v2 7/7] Input: pwm-beeper - switch to using "atomic" PWM API Dmitry Torokhov
2017-01-20 10:23 ` Thierry Reding
2017-01-20 10:08 ` [PATCH v2 1/7] Input: pwm-beeper - remove calls to legacy pwm_request API Thierry Reding
2017-01-20 19:37 ` David Lechner
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20170120101421.GD3824@ulmo.ba.sec \
--to=thierry.reding@gmail.com \
--cc=david@lechnology.com \
--cc=dmitry.torokhov@gmail.com \
--cc=frieder.schrempf@exceet.de \
--cc=linux-input@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.