The of_update_property() is intent to update a property in a node and if the property does not exist, will add it to the node. The second search of the property is possibly won't be found, that maybe removed by other thread just before the second search begain, if so just retry it. Signed-off-by: Xiubo Li <Li.Xiubo@xxxxxxxxxxxxx> --- drivers/of/base.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/of/base.c b/drivers/of/base.c index f807d0e..d0c53bc 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -1572,6 +1572,7 @@ int of_update_property(struct device_node *np, struct property *newprop) if (!newprop->name) return -EINVAL; +retry: oldprop = of_find_property(np, newprop->name, NULL); if (!oldprop) return of_add_property(np, newprop); @@ -1593,7 +1594,7 @@ int of_update_property(struct device_node *np, struct property *newprop) raw_spin_unlock_irqrestore(&devtree_lock, flags); if (!found) - return -ENODEV; + goto retry; #ifdef CONFIG_PROC_DEVICETREE /* try to add to proc as well if it was initialized */ -- 1.8.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
