ARM: OMAP1: ams-delta-fiq: Fix missing irq_ack
[ Upstream commit fa8397e4 ] Non-serio path of Amstrad Delta FIQ deferred handler depended on irq_ack() method provided by OMAP GPIO driver. That method has been removed by commit 693de831 ("gpio: omap: remove irq_ack method"). Remove useless code from the deferred handler and reimplement the missing operation inside the base FIQ handler. Should another dependency - irq_unmask() - be ever removed from the OMAP GPIO driver, WARN once if missing. Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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