From: Takashi Iwai <tiwai@suse.de>
To: "Wang, Jiada (ESD)" <Jiada_Wang@mentor.com>
Cc: "lgirdwood@gmail.com" <lgirdwood@gmail.com>,
"broonie@kernel.org" <broonie@kernel.org>,
"perex@perex.cz" <perex@perex.cz>,
"alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Frkuska, Joshua" <Joshua_Frkuska@mentor.com>
Subject: Re: [alsa-devel] unload Audio drivers while playback stream is active case kernel crash
Date: Tue, 13 Jan 2015 18:24:44 +0100 [thread overview]
Message-ID: <s5h1tmyiof7.wl-tiwai@suse.de> (raw)
In-Reply-To: <857E9EDCA6C0904DB3357321AA9123EB0108B66919@NA-MBX-01.mgc.mentorg.com>
At Fri, 9 Jan 2015 11:39:32 +0000,
Wang, Jiada (ESD) wrote:
>
> Hi Community
>
> I am using i.MX6Q sabreSD board, which have imx_wm892 machine driver, wm8962 codec and SSI CPU DAI,
>
> I got Kernel crash when unloading audio drivers (playback stream is active)
> modprobe -r snd_soc_imx_wm8962
> modprobe -r snd_soc_fsl_ssi
> modprobe -r snd_soc_wm8962
[snip]
The root problem is that you can unload the module while playing.
The corresponding module refcounts should have been increased during
used.
Do we miss [try_]module_get() somewhere in ASoC?
Takashi
next prev parent reply other threads:[~2015-01-13 17:24 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-09 11:39 Wang, Jiada (ESD)
2015-01-13 17:24 ` Takashi Iwai [this message]
2015-01-13 21:54 ` [alsa-devel] " Mark Brown
2015-01-14 7:43 ` Takashi Iwai
2015-01-14 8:15 ` Lars-Peter Clausen
2015-01-14 8:25 ` jiwang
2015-01-14 9:34 ` Lars-Peter Clausen
2015-01-14 8:47 ` Takashi Iwai
2015-01-14 10:00 ` Lars-Peter Clausen
2015-01-14 10:50 ` Takashi Iwai
2015-01-14 12:02 ` Mark Brown
2015-01-14 12:57 ` Lars-Peter Clausen
2015-01-14 13:06 ` Takashi Iwai
2015-01-14 13:43 ` Fabio Estevam
2015-01-15 4:40 ` jiwang
2015-01-15 6:14 ` Takashi Iwai
2015-01-15 10:52 ` Mark Brown
2015-01-14 13:01 ` Takashi Iwai
2015-01-14 16:34 ` Mark Brown
2015-01-15 6:21 ` Takashi Iwai
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