From: Scott Wood <scottwood@freescale.com>
Date: Thu, 26 Aug 2010 07:49:07 +0000 (-0500)
Subject: powerpc/85xx: Set up doorbells even with no mpic
X-Git-Tag: firefly_0821_release~3680^2~4928^2~79
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=dc2c9c52b604f51b1416ed87ff54a1c77a1a8b5b;p=firefly-linux-kernel-4.4.55.git

powerpc/85xx: Set up doorbells even with no mpic

In cases like when the platform is used under hypervisor we will NOT
have an MPIC controller but still want doorbells setup.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---

diff --git a/arch/powerpc/platforms/85xx/smp.c b/arch/powerpc/platforms/85xx/smp.c
index 8eef8d2b4472..f5aa6190bba2 100644
--- a/arch/powerpc/platforms/85xx/smp.c
+++ b/arch/powerpc/platforms/85xx/smp.c
@@ -111,14 +111,6 @@ smp_85xx_kick_cpu(int nr)
 	return 0;
 }
 
-static void __init
-smp_85xx_setup_cpu(int cpu_nr)
-{
-	mpic_setup_this_cpu();
-	if (cpu_has_feature(CPU_FTR_DBELL))
-		doorbell_setup_this_cpu();
-}
-
 struct smp_ops_t smp_85xx_ops = {
 	.kick_cpu = smp_85xx_kick_cpu,
 #ifdef CONFIG_KEXEC
@@ -224,14 +216,25 @@ static void mpc85xx_smp_machine_kexec(struct kimage *image)
 }
 #endif /* CONFIG_KEXEC */
 
+static void __init
+smp_85xx_setup_cpu(int cpu_nr)
+{
+	if (smp_85xx_ops.probe == smp_mpic_probe)
+		mpic_setup_this_cpu();
+
+	if (cpu_has_feature(CPU_FTR_DBELL))
+		doorbell_setup_this_cpu();
+}
+
 void __init mpc85xx_smp_init(void)
 {
 	struct device_node *np;
 
+	smp_85xx_ops.setup_cpu = smp_85xx_setup_cpu;
+
 	np = of_find_node_by_type(NULL, "open-pic");
 	if (np) {
 		smp_85xx_ops.probe = smp_mpic_probe;
-		smp_85xx_ops.setup_cpu = smp_85xx_setup_cpu;
 		smp_85xx_ops.message_pass = smp_mpic_message_pass;
 	}