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x86/ioapic: Return suitable error code in mp_map_gsi_to_irq()

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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>
This commit is contained in:
Andy Shevchenko 2017-01-19 21:24:22 +02:00 committed by Thomas Gleixner
parent 81a7117674
commit 358e96deae
1 changed files with 2 additions and 2 deletions
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4
arch/x86/kernel/apic/io_apic.c
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@ -1107,12 +1107,12 @@ int mp_map_gsi_to_irq(u32 gsi, unsigned int flags, struct irq_alloc_info *info)
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);
}