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powerpc/eeh-powernv: Fix unbalanced IRQ warning

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pnv_eeh_next_error() re-enables the eeh opal event interrupt but it
gets called from a loop if there are more outstanding events to
process, resulting in a warning due to enabling an already enabled
interrupt. Instead the interrupt should only be re-enabled once the
last outstanding event has been processed.

Tested-by: Daniel Axtens <dja@axtens.net>
Reported-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Alistair Popple <alistair@popple.id.au>
Acked-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Alistair Popple 2015-07-30 16:53:54 +10:00 committed by Michael Ellerman
parent 120d200a86
commit b8d65e9662
1 changed files with 1 additions and 1 deletions
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arch/powerpc/platforms/powernv/eeh-powernv.c
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@ -1478,7 +1478,7 @@ static int pnv_eeh_next_error(struct eeh_pe **pe)
}
/* Unmask the event */
if (eeh_enabled())
if (ret == EEH_NEXT_ERR_NONE && eeh_enabled())
enable_irq(eeh_event_irq);
return ret;