From: Rusty Russell <rusty@rustcorp.com.au>
Date: Mon, 9 Mar 2009 16:06:28 +0000 (-0600)
Subject: lguest: fix for CONFIG_SPARSE_IRQ=y
X-Git-Tag: v2.6.29-rc8~52^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6db6a5f3ae2ca6b874b0fd97ae16fdc9b5cdd6cc;p=pandora-kernel.git

lguest: fix for CONFIG_SPARSE_IRQ=y

Impact: remove lots of lguest boot WARN_ON() when CONFIG_SPARSE_IRQ=y

We now need to call irq_to_desc_alloc_cpu() before
set_irq_chip_and_handler_name(), but we can't do that from init_IRQ (no
kmalloc available).

So do it as we use interrupts instead.  Also means we only alloc for
irqs we use, which was the intent of CONFIG_SPARSE_IRQ anyway.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Ingo Molnar <mingo@redhat.com>
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