diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-powerpc/prom.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/include/asm-powerpc/prom.h b/include/asm-powerpc/prom.h index 39f04ef96f38..1fd7a2253e3a 100644 --- a/include/asm-powerpc/prom.h +++ b/include/asm-powerpc/prom.h @@ -332,10 +332,18 @@ extern int of_irq_map_one(struct device_node *device, int index, struct pci_dev; extern int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq); -static inline void of_irq_to_resource(struct device_node *dev, int index, struct resource *r) +static inline int of_irq_to_resource(struct device_node *dev, int index, struct resource *r) { - r->start = r->end = irq_of_parse_and_map(dev, index); - r->flags = IORESOURCE_IRQ; + int irq = irq_of_parse_and_map(dev, index); + + /* Only dereference the resource if both the + * resource and the irq are valid. */ + if (r && irq != NO_IRQ) { + r->start = r->end = irq; + r->flags = IORESOURCE_IRQ; + } + + return irq; } |