genirq/generic_chip: Add irq_unmap callback
Without this patch irq_domain_disassociate() cannot properly release the interrupt. In fact, irq_map_generic_chip() checks a bit on 'gc->installed' but said bit is never cleared, only set. Commit 088f40b7 ("genirq: Generic chip: Add linear irq domain support") added irq_map_generic_chip() function and also stated "This lacks a removal function for now". This commit provides an implementation of an unmap function that can be called by irq_domain_disassociate(). [ tglx: Made the function static and removed the export as we have neither a prototype nor a modular user. ] Fixes: 088f40b7 ("genirq: Generic chip: Add linear irq domain support") Signed-off-by: Sebastian Frias <sf84@laposte.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Mason <slash.tmp@free.fr> Cc: Jason Cooper <jason@lakedaemon.net> Link: http://lkml.kernel.org/r/579F5C5A.2070507@laposte.netSigned-off-by: Thomas Gleixner <tglx@linutronix.de>
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