From 0a0a94219074d79370b1cd1b533ead63d51c3730 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 7 May 2014 15:44:19 +0000
Subject: [PATCH] s390: pci: Check return value of alloc_irq_desc() proper

alloc_irq_desc() returns an integer and as documented either a valid
irq number or a negative error code. Checking for NO_IRQ is definitely
not the proper error handling.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Grant Likely <grant.likely@linaro.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: linux390@de.ibm.com
Link: http://lkml.kernel.org/r/20140507154339.409085048@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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