From: Nicolin Chen <nicoleotsuka@gmail.com>
To: Shengjiu Wang <shengjiu.wang@nxp.com>
Cc: alsa-devel@alsa-project.org, timur@kernel.org,
Xiubo.Lee@gmail.com, linuxppc-dev@lists.ozlabs.org,
tiwai@suse.com, lgirdwood@gmail.com, perex@perex.cz,
broonie@kernel.org, festevam@gmail.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH V2] ASoC: fsl_esai: Add spin lock to protect reset, stop and start
Date: Fri, 25 Oct 2019 14:10:14 -0700 [thread overview]
Message-ID: <20191025211013.GA15101@Asurada-Nvidia.nvidia.com> (raw)
In-Reply-To: <36e1d0157d2b71985b88e841d416d04c584c04fe.1571986436.git.shengjiu.wang@nxp.com>
On Fri, Oct 25, 2019 at 03:13:53PM +0800, Shengjiu Wang wrote:
> xrun may happen at the end of stream, the
> trigger->fsl_esai_trigger_stop maybe called in the middle of
> fsl_esai_hw_reset, this may cause esai in wrong state
> after stop, and there may be endless xrun interrupt.
>
> This issue may also happen with trigger->fsl_esai_trigger_start.
>
> So Add spin lock to lock those functions.
>
> Fixes: 7ccafa2b3879 ("ASoC: fsl_esai: recover the channel swap after xrun")
> Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Some small comments inline. Once they are addressed, please add:
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
Thanks
> ---
> Change in v2
> -add lock for fsl_esai_trigger_start.
>
> sound/soc/fsl/fsl_esai.c | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/sound/soc/fsl/fsl_esai.c b/sound/soc/fsl/fsl_esai.c
> index 37b14c48b537..9b28e2af26e4 100644
> --- a/sound/soc/fsl/fsl_esai.c
> +++ b/sound/soc/fsl/fsl_esai.c
> @@ -33,6 +33,7 @@
> * @fsysclk: system clock source to derive HCK, SCK and FS
> * @spbaclk: SPBA clock (optional, depending on SoC design)
> * @task: tasklet to handle the reset operation
> + * @lock: spin lock to handle reset and stop behavior
Should be "between hw_reset() and trigger()" now.
> * @fifo_depth: depth of tx/rx FIFO
> * @slot_width: width of each DAI slot
> * @slots: number of slots
> @@ -56,6 +57,7 @@ struct fsl_esai {
> struct clk *fsysclk;
> struct clk *spbaclk;
> struct tasklet_struct task;
> + spinlock_t lock; /* Protect reset and stop */
We can drop the comments here since you add it to the top.
next prev parent reply other threads:[~2019-10-25 21:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-25 7:13 [PATCH V2] ASoC: fsl_esai: Add spin lock to protect reset, stop and start Shengjiu Wang
2019-10-25 21:10 ` Nicolin Chen [this message]
2019-10-28 7:47 S.j. Wang
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=20191025211013.GA15101@Asurada-Nvidia.nvidia.com \
--to=nicoleotsuka@gmail.com \
--cc=Xiubo.Lee@gmail.com \
--cc=alsa-devel@alsa-project.org \
--cc=broonie@kernel.org \
--cc=festevam@gmail.com \
--cc=lgirdwood@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=perex@perex.cz \
--cc=shengjiu.wang@nxp.com \
--cc=timur@kernel.org \
--cc=tiwai@suse.com \
/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 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).