From: Takashi Iwai <tiwai@suse.de>
To: Duncan Sands <baldrick@wanadoo.fr>
Cc: alsa-devel@lists.sourceforge.net
Subject: Re: 2.5.50: sleeping function called from illegal context
Date: Tue, 03 Dec 2002 13:01:13 +0100 [thread overview]
Message-ID: <s5hk7ir9ura.wl@alsa2.suse.de> (raw)
In-Reply-To: <200212030407.53337.baldrick@wanadoo.fr>
At Tue, 3 Dec 2002 04:07:52 +0100,
Duncan Sands wrote:
>
> Got this with today 2.5 BK tree:
>
> Debug: sleeping function called from illegal context at include/asm/semaphore.h:119
> Call Trace:
> [<c0113f1a>] __might_sleep+0x52/0x58
> [<c024291a>] snd_cs46xx_iec958_put+0x36/0xf8
> [<c0217f28>] snd_ctl_elem_write+0xe0/0x1a4
> [<c0218360>] snd_ctl_ioctl+0x184/0x2c8
> [<c01462e6>] sys_ioctl+0x1fa/0x244
> [<c01088f7>] syscall_call+0x7/0xb
ouch, we are using rwlock in the control ioctls.
mutex is necessary for many controls, so we cannot suppress the use of
mutex in control callbacks.
but temporary unlocking looks ad-hoc, too...
Takashi
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next prev parent reply other threads:[~2002-12-03 12:01 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-03 3:07 2.5.50: sleeping function called from illegal context Duncan Sands
2002-12-03 12:01 ` Takashi Iwai [this message]
2002-12-03 3:55 ` Duncan Sands
2002-12-03 13:56 ` Takashi Iwai
2002-12-03 5:57 ` Duncan Sands
2002-12-03 14:56 ` Takashi Iwai
2002-12-03 6:39 ` Duncan Sands
2002-12-06 13:13 ` Duncan Sands
2002-12-03 18:34 ` Paul Davis
[not found] <3DE3F32200B4A5E8@mel-rti20.wanadoo.fr>
2002-12-03 12:21 ` Duncan Sands
2002-12-04 15:41 ` Takashi Iwai
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