From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Thu, 29 Aug 2013 06:56:59 +0000 (+1000)
Subject: powerpc/scom: Create debugfs files using ibm,chip-id if available
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=762fd3ab6d2c4b438ce49f54860dc509e591209c;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

powerpc/scom: Create debugfs files using ibm,chip-id if available

When creating the debugfs scom files, use "ibm,chip-id" as the scom%d
index rather than a simple made up number when possible.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

diff --git a/arch/powerpc/sysdev/scom.c b/arch/powerpc/sysdev/scom.c
index 413622d54395..cb20d542a5aa 100644
--- a/arch/powerpc/sysdev/scom.c
+++ b/arch/powerpc/sysdev/scom.c
@@ -196,8 +196,13 @@ static int scom_debug_init(void)
 		return -1;
 
 	i = rc = 0;
-	for_each_node_with_property(dn, "scom-controller")
-		rc |= scom_debug_init_one(root, dn, i++);
+	for_each_node_with_property(dn, "scom-controller") {
+		int id = of_get_ibm_chip_id(dn);
+		if (id == -1)
+			id = i;
+		rc |= scom_debug_init_one(root, dn, id);
+		i++;
+	}
 
 	return rc;
 }