[PATCHv7 1/6] msi: Relax msi_domain_alloc() to support parentless MSI irqdomains

From: Liu Jiang Previously msi_domain_alloc() assumes MSI irqdomains always have parent irqdomains, but that's not true for the new Intel VMD devices. So relax msi_domain_alloc() to support parentless MSI irqdomains. Signed-off-by: Jiang Liu Signed-off-by: Keith Busch --- kernel/irq/msi.c |

[PATCHv7 1/6] msi: Relax msi_domain_alloc() to support parentless MSI irqdomains

From: Liu Jiang Previously msi_domain_alloc() assumes MSI irqdomains always have parent irqdomains, but that's not true for the new Intel VMD devices. So relax msi_domain_alloc() to support parentless MSI irqdomains. Signed-off-by: Jiang Liu