From 2fda14ae6aa36798b59ab0591a2009ead206159b Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Fri, 31 Jul 2015 09:31:19 -0600 Subject: [PATCH] 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 Reviewed-by: Bin Meng --- drivers/core/uclass.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c index aba98801fd..ffe69956d5 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--) { -- 2.25.1