From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Daney Subject: [PATCH v8 4/7] irqdomain: Check for NULL function pointer in irq_domain_free_irqs_hierarchy() Date: Thu, 17 Aug 2017 17:53:33 -0700 Message-ID: <1503017616-3252-5-git-send-email-david.daney@cavium.com> References: <1503017616-3252-1-git-send-email-david.daney@cavium.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1503017616-3252-1-git-send-email-david.daney@cavium.com> Sender: linux-kernel-owner@vger.kernel.org To: Linus Walleij , Alexandre Courbot , Mark Rutland , Marc Zyngier , Thomas Gleixner , linux-gpio@vger.kernel.org Cc: linux-kernel@vger.kernel.org, David Daney List-Id: linux-gpio@vger.kernel.org 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 --- 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, -- 1.8.3.1