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    SubjectRe: [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)
    On Mon, 22 Aug 2011 23:10:21 -0600 (MDT)
    Paul Walmsley <> 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.


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