Add a check to avoid NULL pointer dereference error when
booted in non-DT mode. While at it also remove the additional
of_node_get which is no longer needed for of_get_child_by_name
and fix the node pointer.
Signed-off-by: Sachin Kamat <[email protected]>
Reported-by: Philippe Rétornaz <[email protected]>
---
drivers/regulator/mc13xxx-regulator-core.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/regulator/mc13xxx-regulator-core.c b/drivers/regulator/mc13xxx-regulator-core.c
index 4498a3f0733d..bf75fcabfa3c 100644
--- a/drivers/regulator/mc13xxx-regulator-core.c
+++ b/drivers/regulator/mc13xxx-regulator-core.c
@@ -167,8 +167,10 @@ int mc13xxx_get_num_regulators_dt(struct platform_device *pdev)
struct device_node *parent;
int num;
- of_node_get(pdev->dev.parent->of_node);
- parent = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
+ if (!pdev->dev.of_node)
+ return -ENODEV;
+
+ parent = of_get_child_by_name(pdev->dev.of_node, "regulators");
if (!parent)
return -ENODEV;
@@ -187,8 +189,10 @@ struct mc13xxx_regulator_init_data *mc13xxx_parse_regulators_dt(
struct device_node *parent, *child;
int i, parsed = 0;
- of_node_get(pdev->dev.parent->of_node);
- parent = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
+ if (!pdev->dev.of_node)
+ return NULL;
+
+ parent = of_get_child_by_name(pdev->dev.of_node, "regulators");
if (!parent)
return NULL;
--
1.7.9.5
On Tue, Feb 25, 2014 at 04:49:27PM +0530, Sachin Kamat wrote:
> Add a check to avoid NULL pointer dereference error when
> booted in non-DT mode. While at it also remove the additional
> of_node_get which is no longer needed for of_get_child_by_name
> and fix the node pointer.
Applied, thanks.