From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Tue, 8 May 2012 03:31:59 +0000 (+1000)
Subject: powerpc/irq: Fix bug with new lazy IRQ handling code
X-Git-Tag: v3.4-rc7~23^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=56dfa7fa19e36db352a94be022243ed461710119;p=pandora-kernel.git

powerpc/irq: Fix bug with new lazy IRQ handling code

We had a case where we could turn on hard interrupts while
leaving the PACA_IRQ_HARD_DIS bit set in the PACA. This can
in turn cause a BUG_ON() to hit in __check_irq_replay() due
to interrupt state getting out of sync.

The assembly code was also way too convoluted. Instead, we
now leave it to the C code to do the right thing which ends
up being smaller and more readable.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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