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    SubjectRe: [PATCH] Input: eeti_ts: Mark as CONFIG_BROKEN
    On Tue, Apr 10, 2012 at 11:10:47AM +0100, Russell King - ARM Linux wrote:
    > On Sat, Apr 07, 2012 at 01:32:31PM -0700, Olof Johansson wrote:
    > > Haojian, I think it was probably premature to do the multiplatform
    > > change like that, since it means that a PXA-only kernel has no mapping
    > > from irq_to_gpio to pxa_irq_to_gpio. Can you please address this as a
    > > fix for 3.4?
    > Please fix ezx-pcap instead - it's broken as it currently stands by using
    > irq_to_gpio(), and it's one reason why my randconfig builds on OMAP fail.
    > The big problem is - what does this do:
    > do {
    > ...
    > } while (gpio_get_value(irq_to_gpio(pcap->spi->irq)));
    > if pcap->spi->irq has no GPIO associated with the interrupt? irq_to_gpio()
    > probably returns some random number which might be some other GPIO in the
    > system, and gpio_get_value() could oops if irq_to_gpio returns a negative
    > or large positive number. To put it another way, according to the above
    > code, irq_to_gpio() must always return a valid gpio for the IRQ even if
    > the IRQ doesn't have a GPIO associated with it.
    > This is a fine illustration of why irq_to_gpio() is just plain broken in
    > its design.

    OK, so we can fix eeti_ts and wacom_i2c; but what do we do with
    egalax_ts.c? It reconfigures gpio as output and sens a pulse to wake the
    controller from sleep. I guess we'll need platform data attached to



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