[PATCH 1/4] ARM: davinci: Check for NULL return from irq_alloc_generic_chip

[Todd Poynor]

Signed-off-by: Todd Poynor <toddpoynor at google.com>
---
 arch/arm/mach-davinci/irq.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-davinci/irq.c b/arch/arm/mach-davinci/irq.c
index bfe68ec..ab7f688 100644
--- a/arch/arm/mach-davinci/irq.c
+++ b/arch/arm/mach-davinci/irq.c
@@ -52,6 +52,13 @@ davinci_alloc_gc(void __iomem *base, unsigned int irq_start, unsigned int num)
 	struct irq_chip_type *ct;
 
 	gc = irq_alloc_generic_chip("AINTC", 1, irq_start, base, handle_edge_irq);
+
+	if (!gc) {
+		pr_err("%s: irq_alloc_generic_chip for IRQ %u failed\n",
+		       __func__, irq_start);
+		return;
+	}
+
 	ct = gc->chip_types;
 	ct->chip.irq_ack = irq_gc_ack;
 	ct->chip.irq_mask = irq_gc_mask_clr_bit;
-- 
1.7.3.1