From: Yinghai Lu <yhlu.kernel@gmail.com>
Date: Wed, 20 Aug 2008 03:50:05 +0000 (-0700)
Subject: generic: sparse irqs: use irq_desc() together with dyn_array, instead of irq_desc[]
X-Git-Tag: v2.6.28-rc1~80^2~145
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=08678b0841267c1d00d771fe01548d86043d065e;p=pandora-kernel.git

generic: sparse irqs: use irq_desc() together with dyn_array, instead of irq_desc[]

add CONFIG_HAVE_SPARSE_IRQ to for use condensed array.
Get rid of irq_desc[] array assumptions.

Preallocate 32 irq_desc, and irq_desc() will try to get more.

( No change in functionality is expected anywhere, except the odd build
  failure where we missed a code site or where a crossing commit itroduces
  new irq_desc[] usage. )

v2: according to Eric, change get_irq_desc() to irq_desc()

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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