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iommu: smar: Fix return value check of create_irq()

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ia64 returns a negative error code when allocation fails andx86
returns 0. Make it handle both.

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: Fenghua Yu <fenghua.yu@intel.com>
Cc: x86@kernel.org
Acked-by: Joerg Roedel <joro@8bytes.org>
Cc: linux-ia64@vger.kernel.org
Cc: iommu@lists.linux-foundation.org
Link: http://lkml.kernel.org/r/20140507154336.178850165@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2014-05-07 15:44:10 +00:00
parent d07c9f1875
commit aa5125a455
1 changed files with 1 additions and 1 deletions
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2
drivers/iommu/dmar.c
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@ -1551,7 +1551,7 @@ int dmar_set_interrupt(struct intel_iommu *iommu)
return 0;
irq = create_irq();
if (!irq) {
if (irq <= 0) {
pr_err("IOMMU: no free vectors\n");
return -EINVAL;
}