x86/ioapic: Return suitable error code in mp_map_gsi_to_irq()
mp_map_gsi_to_irq() in some cases might return legacy -1, which would be
wrongly interpreted as -EPERM.
Correct those cases to return proper error code.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: http://lkml.kernel.org/r/20170119192425.189899-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 945e512..f62c38d 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -1107,12 +1107,12 @@
ioapic = mp_find_ioapic(gsi);
if (ioapic < 0)
- return -1;
+ return -ENODEV;
pin = mp_find_ioapic_pin(ioapic, gsi);
idx = find_irq_entry(ioapic, pin, mp_INT);
if ((flags & IOAPIC_MAP_CHECK) && idx < 0)
- return -1;
+ return -ENODEV;
return mp_map_pin_to_irq(gsi, idx, ioapic, pin, flags, info);
}