From: Roland Stigge <stigge@antcom.de>
Date: Wed, 7 Nov 2012 12:30:50 +0000 (+0100)
Subject: ARM: LPC32xx: Relocate calls to irq_set_chained_handler()
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~49^2~30^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e40ec953b6ac21257760730af8c36e2695e4beac;p=pandora-kernel.git

ARM: LPC32xx: Relocate calls to irq_set_chained_handler()

This patch fixes the issue of an access to a yet uninitialized data structure
at the point where irq_set_chained_handler() was called by moving the
respective calls to the end of lpc32xx_init_irq().

The call path was:

irq_set_chained_handler()
-> __irq_set_handler()
-> irq_startup()
-> irq_enable()
-> desc->irq_data.chip->irq_unmask()

at which point lpc32xx_unmask_irq() effectively read desc->irq_data.hwirq which
was only later initialized.

Signed-off-by: Roland Stigge <stigge@antcom.de>
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