From mboxrd@z Thu Jan  1 00:00:00 1970
From: Takashi Iwai <tiwai@suse.de>
Subject: Re: (no subject)
Date: Wed, 16 Jul 2003 13:40:51 +0200
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To: Eliot Blennerhassett <bigblen@icqmail.com>
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At Tue, 15 Jul 2003 18:55:10 -0700 (PDT),
Eliot Blennerhassett wrote:
> 
> Question:
> Notwithstanding bad style etc, am I doing something that is fundamentally wrong
> in using a userspace buffer when I am inside a spinlock i.e. in interrupt
> context?  (In the same way as I must not use a semaphore in interrupt context)

yes.  you cannot copy_from/to_user() in the atomic situation.


Takashi


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