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-rw-r--r--drivers/of/irq.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index 0d7765807f49..1a7980692f25 100644
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -290,7 +290,7 @@ int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_ar
struct device_node *p;
const __be32 *intspec, *tmp, *addr;
u32 intsize, intlen;
- int i, res = -EINVAL;
+ int i, res;
pr_debug("of_irq_parse_one: dev=%s, index=%d\n", of_node_full_name(device), index);
@@ -323,15 +323,19 @@ int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_ar
/* Get size of interrupt specifier */
tmp = of_get_property(p, "#interrupt-cells", NULL);
- if (tmp == NULL)
+ if (tmp == NULL) {
+ res = -EINVAL;
goto out;
+ }
intsize = be32_to_cpu(*tmp);
pr_debug(" intsize=%d intlen=%d\n", intsize, intlen);
/* Check index */
- if ((index + 1) * intsize > intlen)
+ if ((index + 1) * intsize > intlen) {
+ res = -EINVAL;
goto out;
+ }
/* Copy intspec into irq structure */
intspec += index * intsize;