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Date: Tue, 23 Aug 2011 09:57:11 +0100
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Paul Walmsley <paul@pwsan.com>
Cc: linux-serial@vger.kernel.org, Alan Cox <alan@linux.intel.com>,
        Pantelis Antoniou <pantelis.antoniou@gmail.com>,
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        mporter@ti.com, Kevin Hilman <khilman@ti.com>,
        "Govindraj.R" <govindraj.raja@ti.com>
Subject: Re: [PATCH] tty: omap-serial: fix boot hang by converting to use a
 threaded IRQ handler (was Re: [PATCH] irq: always set IRQF_ONESHOT if no
 primary handler is specified)
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On Mon, 22 Aug 2011 23:10:21 -0600 (MDT)
Paul Walmsley <paul@pwsan.com> wrote:

> 
> Convert the omap-serial hardirq handler to a threaded IRQ handler. Without 
> this patch, OMAP boards which use the on-board OMAP UARTs and the 
> omap-serial driver will not boot to userspace after commit 
> f3637a5f2e2eb391ff5757bc83fb5de8f9726464 ("irq: Always set IRQF_ONESHOT if 
> no primary handler is specified").  Enabling CONFIG_DEBUG_SHIRQ reveals 
> 'IRQ handler type mismatch' errors:

There are multiple other drivers reporting all these problems - the
faulty irq change should be reverted at this point not the drivers
fiddled with.

Alan