From: Rob Herring <robh@kernel.org>
Date: Fri, 16 Nov 2018 22:10:59 +0000 (-0600)
Subject: powerpc: Rework btext_find_display to use of_stdout and device_type helpers
X-Git-Tag: v5.4-rc1~1965^2~167
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5b8d6be7b8dd286bd654e37d637ded139eae5dd4;p=platform%2Fkernel%2Flinux-rpi.git

powerpc: Rework btext_find_display to use of_stdout and device_type helpers

Remove directly accessing device_node.type pointer and use the
accessors instead. This will eventually allow removing the type
pointer.

In the process, the of_stdout pointer can be used instead of finding
the stdout node again.

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---

diff --git a/arch/powerpc/kernel/btext.c b/arch/powerpc/kernel/btext.c
index b4241ed..6dfceaa 100644
--- a/arch/powerpc/kernel/btext.c
+++ b/arch/powerpc/kernel/btext.c
@@ -232,20 +232,12 @@ static int btext_initialize(struct device_node *np)
 
 int __init btext_find_display(int allow_nonstdout)
 {
-	const char *name;
-	struct device_node *np = NULL; 
+	struct device_node *np = of_stdout;
 	int rc = -ENODEV;
 
-	name = of_get_property(of_chosen, "linux,stdout-path", NULL);
-	if (name != NULL) {
-		np = of_find_node_by_path(name);
-		if (np != NULL) {
-			if (strcmp(np->type, "display") != 0) {
-				printk("boot stdout isn't a display !\n");
-				of_node_put(np);
-				np = NULL;
-			}
-		}
+	if (!of_node_is_type(np, "display")) {
+		printk("boot stdout isn't a display !\n");
+		np = NULL;
 	}
 	if (np)
 		rc = btext_initialize(np);