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Commit 9844a552 authored by Grant Likely's avatar Grant Likely
Browse files

irqdomain: Fix irq_create_direct_mapping() to test irq_domain type. 



irq_create_direct_mapping can only be used with the NOMAP type.  Make
the function test to ensure it is passed the correct type of
irq_domain.

Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Rob Herring <rob.herring@calxeda.com>
parent d6b0d1f7

kernel/irq/irqdomain.c

+2 −2
Original line number Diff line number Diff line
@@ -481,8 +481,8 @@ unsigned int irq_create_direct_mapping(struct irq_domain *domain) 
	if (domain == NULL)

		domain = irq_default_domain;



	BUG_ON(domain == NULL);

	WARN_ON(domain->revmap_type != IRQ_DOMAIN_MAP_NOMAP);

	if (WARN_ON(!domain || domain->revmap_type != IRQ_DOMAIN_MAP_NOMAP))

		return 0;



	virq = irq_alloc_desc_from(1, of_node_to_nid(domain->of_node));

	if (!virq) {