genirq/MSI: Relax msi_domain_alloc() to support parentless MSI irqdomains

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Previously msi_domain_alloc() assumed MSI irqdomains always had parent
irqdomains, but that's not true for the new Intel VMD devices.  Relax
msi_domain_alloc() to support parentless MSI irqdomains.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>

...

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Liu Jiang 2016-01-12 13:18:06 -07:00 • committed by Bjorn Helgaas

parent 1ec218373b

commit bf6f869f8c

1 changed files with 5 additions and 3 deletions

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kernel/irq/msi.c

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