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    SubjectRe: [PATCH 4/7] can/at91: don't check platform_get_irq's return value against zero
    From: Wolfgang Grandegger <>
    Date: Wed, 16 Dec 2009 19:58:38 +0100

    > Uwe Kleine-König wrote:
    >> platform_get_irq returns -ENXIO on failure, so !irq was probably
    >> always true. Better use (int)irq <= 0. Note that a return value of
    >> zero is still handled as error even though this could mean irq0.
    >> This is a followup to 305b3228f9ff4d59f49e6d34a7034d44ee8ce2f0 that
    >> changed the return value of platform_get_irq from 0 to -ENXIO on error.
    >> Signed-off-by: Uwe Kleine-König <>
    > Signed-off-by: Wolfgang Grandegger <>

    Applied, thanks.
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