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arm/imx/gpio: use fls to find set bits in the irq status register
authorUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Mon, 8 Feb 2010 20:02:30 +0000 (21:02 +0100)
committerUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Wed, 24 Feb 2010 09:06:57 +0000 (10:06 +0100)
As in most cases only few irqs are pending using fls is more effective
than looping over all bits.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

No differences found
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