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authorThomas Gleixner <tglx@linutronix.de>2014-05-07 15:44:10 +0000
committerThomas Gleixner <tglx@linutronix.de>2014-05-16 14:05:19 +0200
commitaa5125a45568f8f666f6d2f224fe8ab261b1069e (patch)
tree4c3ffd6028e3611b8cb6bf7162861aab8dfb9394 /drivers/iommu/dmar.c
parentd07c9f18756e8231909a9bbcbfa7502c60cbc810 (diff)
downloadlinux-aa5125a45568f8f666f6d2f224fe8ab261b1069e.tar.bz2
iommu: smar: Fix return value check of create_irq()
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>
Diffstat (limited to 'drivers/iommu/dmar.c')
-rw-r--r--drivers/iommu/dmar.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index 39f8b717fe84..3ce1f62a091f 100644
--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/dmar.c
@@ -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;
}