[PATCH] genirq: fixup checks against nr_cpu_ids

[Alexey Dobriyan]

Valid CPU ids are [0, nr_cpu_ids-1] inclusive.

Signed-off-by: Alexey Dobriyan <adobri...@gmail.com>
---

 kernel/irq/ipi.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/kernel/irq/ipi.c
+++ b/kernel/irq/ipi.c
@@ -165,7 +165,7 @@ irq_hw_number_t ipi_get_hwirq(unsigned int irq, unsigned 
int cpu)
        struct irq_data *data = irq_get_irq_data(irq);
        struct cpumask *ipimask = data ? irq_data_get_affinity_mask(data) : 
NULL;
 
-       if (!data || !ipimask || cpu > nr_cpu_ids)
+       if (!data || !ipimask || cpu >= nr_cpu_ids)
                return INVALID_HWIRQ;
 
        if (!cpumask_test_cpu(cpu, ipimask))
@@ -195,7 +195,7 @@ static int ipi_send_verify(struct irq_chip *chip, struct 
irq_data *data,
        if (!chip->ipi_send_single && !chip->ipi_send_mask)
                return -EINVAL;
 
-       if (cpu > nr_cpu_ids)
+       if (cpu >= nr_cpu_ids)
                return -EINVAL;
 
        if (dest) {