From: Takashi Iwai <tiwai@suse.de>
To: Clemens Ladisch <clemens@ladisch.de>
Cc: Giuliano Pochini <pochini@shiny.it>,
Alsa-devel <alsa-devel@lists.sourceforge.net>
Subject: Re: spin_lock_irqwhat ?
Date: Mon, 10 May 2004 11:25:59 +0200 [thread overview]
Message-ID: <s5h3c68hbvc.wl@alsa2.suse.de> (raw)
In-Reply-To: <Pine.HPX.4.33n.0405101029540.25310-100000@studcom.urz.uni-halle.de>
At Mon, 10 May 2004 10:31:07 +0200 (METDST),
Clemens Ladisch wrote:
>
> Giuliano Pochini wrote:
> > Some drivers use spin_lock_irq() a lot, while others always use
> > spin_lock_irqsave(). I can't see the difference. When it's safe
> > using the _irq() version ?
>
> Only when you know that you are not in interrupt context.
also, not in the context which already disabled irq.
Takashi
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next prev parent reply other threads:[~2004-05-10 9:25 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-08 11:36 spin_lock_irqwhat ? Giuliano Pochini
2004-05-10 8:31 ` Clemens Ladisch
2004-05-10 9:25 ` Takashi Iwai [this message]
2004-05-10 14:51 ` Giuliano Pochini
2004-05-10 15:08 ` Takashi Iwai
2004-05-13 7:31 ` Giuliano Pochini
2004-05-13 18:57 ` Giuliano Pochini
2004-05-14 10:37 ` Takashi Iwai
2004-05-15 21:37 ` Giuliano Pochini
2004-05-16 15:00 ` Takashi Iwai
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