From: Dong Aisheng <[email protected]>

This function will return 1 even the device node passed in
is NULL which is a little error-prone.
Change to return 0 if the device node passed in is NULL.

Signed-off-by: Dong Aisheng <[email protected]>
---
 drivers/of/base.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/of/base.c b/drivers/of/base.c
index 133908a..b9347d8 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -280,6 +280,9 @@ int of_device_is_available(const struct device_node *device)
        const char *status;
        int statlen;
 
+       if (device == NULL)
+               return 0;
+
        status = of_get_property(device, "status", &statlen);
        if (status == NULL)
                return 1;
-- 
1.7.0.4


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