linux-kernel - Re: [PATCH v2] serial: 8250: fix shared interrupts issues with SMP and RT kernels

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Message-ID: <20080709202131.362943ea@the-village.bc.nu>
Date:	Wed, 9 Jul 2008 20:21:31 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	avorontsov@...mvista.com
Cc:	Ingo Molnar <mingo@...e.hu>, linux-serial@...r.kernel.org,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Steven Rostedt <rostedt@...dmis.org>,
	Daniel Walker <dwalker@...sta.com>
Subject: Re: [PATCH v2] serial: 8250: fix shared interrupts issues with SMP
 and RT kernels

> > But this can't happen here. IRQ will not grab the up->port.lock,
> > because port isn't registered in the 8250 IRQ handling chain (yet).
> 
> Alan, are there any issues with the proof or the patch itself?

The logic looks fine, the analysis looks fine. 

Alan
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