Convert the interrupts property parsing to use the OF property API
instead of open coding the parsing of the raw property value. This saves
a number of LoC, and the result is easier to read.
Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
---
drivers/of/irq.c | 34 +++++++++++++---------------------
1 file changed, 13 insertions(+), 21 deletions(-)
diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index abbd252fe25b..aa2a60c8868e 100644
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -292,8 +292,8 @@ EXPORT_SYMBOL_GPL(of_irq_parse_raw);
int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_args *out_irq)
{
struct device_node *p;
- const __be32 *intspec, *addr;
- u32 intsize, intlen;
+ const __be32 *addr;
+ u32 intsize;
int i, res;
pr_debug("of_irq_parse_one: dev=%pOF, index=%d\n", device, index);
@@ -311,15 +311,6 @@ int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_ar
if (!res)
return of_irq_parse_raw(addr, out_irq);
- /* Get the interrupts property */
- intspec = of_get_property(device, "interrupts", &intlen);
- if (intspec == NULL)
- return -EINVAL;
-
- intlen /= sizeof(*intspec);
-
- pr_debug(" intspec=%d intlen=%d\n", be32_to_cpup(intspec), intlen);
-
/* Look for the interrupt parent. */
p = of_irq_find_parent(device);
if (p == NULL)
@@ -331,20 +322,21 @@ int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_ar
goto out;
}
- pr_debug(" intsize=%d intlen=%d\n", intsize, intlen);
-
- /* Check index */
- if ((index + 1) * intsize > intlen) {
- res = -EINVAL;
- goto out;
- }
+ pr_debug(" parent=%pOF, intsize=%d\n", p, intsize);
/* Copy intspec into irq structure */
- intspec += index * intsize;
out_irq->np = p;
out_irq->args_count = intsize;
- for (i = 0; i < intsize; i++)
- out_irq->args[i] = be32_to_cpup(intspec++);
+ for (i = 0; i < intsize; i++) {
+ res = of_property_read_u32_index(device, "interrupts",
+ (index * intsize) + i,
+ out_irq->args + i);
+ if (res)
+ goto out;
+ }
+
+ pr_debug(" intspec=%d\n", *out_irq->args);
+
/* Check if there are any interrupt-map translations to process */
res = of_irq_parse_raw(addr, out_irq);
--
2.11.0
--
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