[U-Boot] [PATCH v2 02/47] dm: core: Check for empty list in uclass_find_device()

This function needs to check the list has entries before traversing it. Fix this bug.

Signed-off-by: Simon Glass sjg@chromium.org ---

Changes in v2: - Correct the return code to avoid a test failure

drivers/core/uclass.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c index aba9880..ffe6995 100644 --- a/drivers/core/uclass.c +++ b/drivers/core/uclass.c @@ -153,6 +153,8 @@ int uclass_find_device(enum uclass_id id, int index, struct udevice **devp) ret = uclass_get(id, &uc); if (ret) return ret; + if (list_empty(&uc->dev_head)) + return -ENODEV;

list_for_each_entry(dev, &uc->dev_head, uclass_node) { if (!index--) {