linux/x86: fix off-by-one error in the pirq range checks

Signed-off-by: Jan Beulich <jbeulich@novell.com>

diff --git a/arch/i386/kernel/io_apic-xen.c b/arch/i386/kernel/io_apic-xen.c
index b0f41e073245e4cc151f6fc32e5d0af1d2cbc215..9dd643172b9a2ace9bf68fd86b7e69d9a47c3d1b 100644 (file)
--- a/arch/i386/kernel/io_apic-xen.c
+++ b/arch/i386/kernel/io_apic-xen.c
@@ -1220,7 +1220,7 @@ int assign_irq_vector(int irq)
 
        BUG_ON(irq != AUTO_ASSIGN && (unsigned)irq >= NR_IRQ_VECTORS);
 
-       if (irq < PIRQ_BASE || irq - PIRQ_BASE > NR_PIRQS)
+       if (irq < PIRQ_BASE || irq - PIRQ_BASE >= NR_PIRQS)
                return -EINVAL;
 
        spin_lock_irqsave(&vector_lock, flags);

diff --git a/arch/x86_64/kernel/io_apic-xen.c b/arch/x86_64/kernel/io_apic-xen.c
index 9e9e0dbe679a08713694fcc45c60aecb91433789..096c6cec4b05e2bf2264c8fa3a2037d5622f5d3b 100644 (file)
--- a/arch/x86_64/kernel/io_apic-xen.c
+++ b/arch/x86_64/kernel/io_apic-xen.c
@@ -895,7 +895,7 @@ int assign_irq_vector(int irq)
   
        BUG_ON(irq != AUTO_ASSIGN && (unsigned)irq >= NR_IRQ_VECTORS);
 
-       if (irq < PIRQ_BASE || irq - PIRQ_BASE > NR_PIRQS)
+       if (irq < PIRQ_BASE || irq - PIRQ_BASE >= NR_PIRQS)
                return -EINVAL;
 
        spin_lock_irqsave(&vector_lock, flags);