tree ed783c217e3f45029b243f615ce4e3ca239efcc7
parent f318a1229bd8d377282ddb37158812073701a22b
author Sebastian Ott <sebott@linux.vnet.ibm.com> 1414606324 +0100
committer Martin Schwidefsky <schwidefsky@de.ibm.com> 1415017812 +0100

s390/pci: improve irq number check for msix

s390s arch_setup_msi_irqs function ensures that we don't return with
more irqs than the PCI architecture allows and that a single PCI
function doesn't consume more irqs than the kernel is configured for.

At least the last check doesn't help much and should take the sum of
all irqs into account. Since that's already done by irq_alloc_desc
we can remove this check.

As for the first check we should use the value provided by the
firmware which can be less than what the PCI architecture allows.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>