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    SubjectRe: [PATCH 2/3] MFD: twl6040: Allocate IRQ numbers dynamically
    On Fri, May 04, 2012 at 02:55:37PM +0300, Peter Ujfalusi wrote:
    > On 05/04/2012 02:22 PM, Mark Brown wrote:
    > >> The OMAP platform related drives has been already converted to use
    > >> irq_alloc_descs(-1, 0, nr_irqs, 0); to map their range (including GPIO,
    > >> twl6030, etc).

    > > How does this work for interrupts on things like SPI and I2C devices?

    > You mean on devices like twl6040, twl6030, twl4030 (I2C MFD devices)?
    > Or "irq expander" type of devices?

    The latter, and also just any driver that delivers an interrupt via a
    GPIO on OMAP - if the GPIO IRQ numbers are all dynamically allocated
    then it gets hard to register an off-chip device and tell it which
    interrupt to request.
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