LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To: vkoul@kernel.org
Cc: sanyog.r.kale@intel.com, pierre-louis.bossart@linux.intel.com,
	alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] soundwire: stream: fix bad unlock balance
Date: Wed, 22 May 2019 17:41:44 +0100	[thread overview]
Message-ID: <dd34d1ba-b8b6-7882-3e71-d036a97f41df@linaro.org> (raw)
In-Reply-To: <20190522162528.5892-1-srinivas.kandagatla@linaro.org>



On 22/05/2019 17:25, Srinivas Kandagatla wrote:
> This patch fixes below warning due to unlocking without locking.
> 
>   =====================================
>   WARNING: bad unlock balance detected!
>   5.1.0-16506-gc1c383a6f0a2-dirty #1523 Tainted: G        W
>   -------------------------------------
>   aplay/2954 is trying to release lock (&bus->msg_lock) at:
>   do_bank_switch+0x21c/0x480
>   but there are no more locks to release!
> 
> Signed-off-by: Srinivas Kandagatla<srinivas.kandagatla@linaro.org>
> ---
>   drivers/soundwire/stream.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c
> index 544925ff0b40..d16268f30e4f 100644
> --- a/drivers/soundwire/stream.c
> +++ b/drivers/soundwire/stream.c
> @@ -814,7 +814,8 @@ static int do_bank_switch(struct sdw_stream_runtime *stream)
>   			goto error;
>   		}
>   
> -		mutex_unlock(&bus->msg_lock);
> +		if (mutex_is_locked(&bus->msg_lock))
> +			utex_unlock(&bus->msg_lock);
Looks like I messed this up!

I will resend this one!

--srini
>   	}

      parent reply	other threads:[~2019-05-22 16:41 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-22 16:25 Srinivas Kandagatla
2019-05-22 16:41 ` Pierre-Louis Bossart
2019-05-23  8:43   ` Srinivas Kandagatla
2019-05-23  9:20     ` Sanyog Kale
2019-05-23  9:30       ` Srinivas Kandagatla
2019-05-23  9:41         ` Sanyog Kale
2019-05-22 16:41 ` Srinivas Kandagatla [this message]

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=dd34d1ba-b8b6-7882-3e71-d036a97f41df@linaro.org \
    --to=srinivas.kandagatla@linaro.org \
    --cc=alsa-devel@alsa-project.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=pierre-louis.bossart@linux.intel.com \
    --cc=sanyog.r.kale@intel.com \
    --cc=vkoul@kernel.org \
    --subject='Re: [PATCH] soundwire: stream: fix bad unlock balance' \
    /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

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).