[patch 0/3] [patch 0/3] genirq: Suppress resend of level interrupts

From: Thomas Gleixner
Date: Sun Aug 12 2007 - 11:44:46 EST


The delayed irq disable functionality introduced a bug due to
retriggering level type interrupts in case of the delayed disable. The
resulting problem was discussed and debugged here:
http://marc.info/?l=linux-kernel&m=118202978609968&w=2

The resend of a level type interrupt is unnessecary and adds extra
noise to the system. Level type interrupts are resent by hardware when
they are still active at irq_enable(). The hard-/soft-ware resend is
only useful for edge type interrupts.

The following patch series addresses the problem and fixes an
unnoticed mismerge which affects the same area as well.

tglx

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