Commit-ID: 0d12ec075a18f53e6f58ec95a4f534da2641bf9b Gitweb: http://git.kernel.org/tip/0d12ec075a18f53e6f58ec95a4f534da2641bf9b Author: David Daney <david.da...@cavium.com> AuthorDate: Thu, 17 Aug 2017 17:53:33 -0700 Committer: Thomas Gleixner <t...@linutronix.de> CommitDate: Fri, 18 Aug 2017 11:21:42 +0200
irqdomain: Check for NULL function pointer in irq_domain_free_irqs_hierarchy() A follow-on patch will call irq_domain_free_irqs_hierarchy() when the free() function pointer may be NULL. Add a NULL pointer check to handle this new use case. Signed-off-by: David Daney <david.da...@cavium.com> Signed-off-by: Thomas Gleixner <t...@linutronix.de> Reviewed-by: Marc Zyngier <marc.zyng...@arm.com> Cc: Mark Rutland <mark.rutl...@arm.com> Cc: Alexandre Courbot <gnu...@gmail.com> Cc: Linus Walleij <linus.wall...@linaro.org> Cc: linux-g...@vger.kernel.org Link: http://lkml.kernel.org/r/1503017616-3252-5-git-send-email-david.da...@cavium.com --- kernel/irq/irqdomain.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index 2093b88..24fda75 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -1362,7 +1362,8 @@ static void irq_domain_free_irqs_hierarchy(struct irq_domain *domain, unsigned int irq_base, unsigned int nr_irqs) { - domain->ops->free(domain, irq_base, nr_irqs); + if (domain->ops->free) + domain->ops->free(domain, irq_base, nr_irqs); } int irq_domain_alloc_irqs_hierarchy(struct irq_domain *domain,
