From: Michal Suchanek <hramrach@gmail.com>
Date: Sun, 26 Jun 2016 20:11:58 +0000 (+0200)
Subject: of: overlay: add resolver error prints
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5de3bbc8501b637eb753e4ee18a2cccb233cfe41;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

of: overlay: add resolver error prints

Applying overlay fails silently in case of an error. Add error prints.
Most notably the lack of symbols in the live tree is not reported.

Signed-off-by: Michal Suchanek <hramrach@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
---

diff --git a/drivers/of/resolver.c b/drivers/of/resolver.c
index 741461142984..46325d6394cf 100644
--- a/drivers/of/resolver.c
+++ b/drivers/of/resolver.c
@@ -315,6 +315,11 @@ int of_resolve_phandles(struct device_node *resolve)
 	phandle phandle, phandle_delta;
 	int err;
 
+	if (!resolve)
+		pr_err("%s: null node\n", __func__);
+	if (resolve && !of_node_check_flag(resolve, OF_DETACHED))
+		pr_err("%s: node %s not detached\n", __func__,
+			 resolve->full_name);
 	/* the resolve node must exist, and be detached */
 	if (!resolve || !of_node_check_flag(resolve, OF_DETACHED))
 		return -EINVAL;
@@ -371,6 +376,7 @@ int of_resolve_phandles(struct device_node *resolve)
 
 	/* we need to fixup, but no root symbols... */
 	if (!root_sym) {
+		pr_err("%s: no symbols in root of device tree.\n", __func__);
 		err = -EINVAL;
 		goto out;
 	}