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)

Alan Cox
2011-08-23T08:57:11Z

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