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Subject[PATCH v2 1/1] mux: mux-core: Add NULL check for dev->of_node
Date
From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>

If dev->of_node is NULL, then calling mux_control_get()
function can lead to NULL pointer exception. So adding
a NULL check for dev->of_node.

Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
---
drivers/mux/mux-core.c | 3 +++
1 file changed, 3 insertions(+)

Changes since v1:
* Removed dummy new line.

diff --git a/drivers/mux/mux-core.c b/drivers/mux/mux-core.c
index 90b8995..924c983 100644
--- a/drivers/mux/mux-core.c
+++ b/drivers/mux/mux-core.c
@@ -438,6 +438,9 @@ struct mux_control *mux_control_get(struct device *dev, const char *mux_name)
int index = 0;
int ret;

+ if (!np)
+ return ERR_PTR(-ENODEV);
+
if (mux_name) {
index = of_property_match_string(np, "mux-control-names",
mux_name);
--
2.7.4
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