From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Linux Kernel list <linux-kernel@vger.kernel.org>
Cc: Linus Torvalds <torvalds@osdl.org>,
Paul Mackerras <paulus@samba.org>, Andrew Morton <akpm@osdl.org>,
Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [RFC][PATCH] Cascaded interrupts: a simple solution
Date: Thu, 11 May 2006 16:13:43 +1000 [thread overview]
Message-ID: <1147328023.30380.59.camel@localhost.localdomain> (raw)
In-Reply-To: <1147325215.30380.45.camel@localhost.localdomain>
> Index: linux-work/kernel/irq/manage.c
> ===================================================================
> --- linux-work.orig/kernel/irq/manage.c 2006-05-11 11:45:09.000000000 +1000
> +++ linux-work/kernel/irq/manage.c 2006-05-11 12:00:52.000000000 +1000
> @@ -371,6 +371,13 @@ int request_irq(unsigned int irq,
> if (!handler)
> return -EINVAL;
>
> + /*
> + * SA_CASCADE implies SA_INTERRUPT (that is, the demux itself happens
> + * with interrupts disabled, the final handler is still called with
> + */
> + if (irqflags & SA_CASCADEIRQ)
> + irqflags |= SA_INTERRUPT;
> +
Oh and that bit isn't actually necessary ...
Ben.
next prev parent reply other threads:[~2006-05-11 6:14 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-11 5:26 Benjamin Herrenschmidt
2006-05-11 5:41 ` [PATCH] PowerMac use of SA_CASCADEIRQ Benjamin Herrenschmidt
2006-05-11 6:13 ` Benjamin Herrenschmidt [this message]
2006-05-11 9:37 ` [RFC][PATCH] Cascaded interrupts: a simple solution Ingo Molnar
2006-05-11 11:47 ` Benjamin Herrenschmidt
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