From: Mike Travis <travis@sgi.com>
Date: Thu, 9 Apr 2015 18:26:31 +0000 (-0500)
Subject: x86/apic/uv: Update the UV APIC HUB check
X-Git-Tag: firefly_0821_release~176^2~2029^2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=1912c7afa39d2683a574011ff455fe49ada8016c;p=firefly-linux-kernel-4.4.55.git

x86/apic/uv: Update the UV APIC HUB check

Update the check for UV2000/3000.  Note when the HUB is not recognized.

Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Hedi Berriche <hedi@sgi.com>
Acked-by: Dimitri Sivanich <sivanich@sgi.com>
Link: http://lkml.kernel.org/r/20150409182629.267239403@asylum.americas.sgi.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---

diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index e18962c8b007..c8d92950bc04 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -881,10 +881,14 @@ void __init uv_system_init(void)
 	unsigned long mmr_base, present, paddr;
 	unsigned short pnode_mask;
 	unsigned char n_lshift;
-	char *hub = (is_uv1_hub() ? "UV1" :
-		    (is_uv2_hub() ? "UV2" :
-				    "UV3"));
+	char *hub = (is_uv1_hub() ? "UV100/1000" :
+		    (is_uv2_hub() ? "UV2000/3000" :
+		    (is_uv3_hub() ? "UV300" : NULL)));
 
+	if (!hub) {
+		pr_err("UV: Unknown/unsupported UV hub\n");
+		return;
+	}
 	pr_info("UV: Found %s hub\n", hub);
 	map_low_mmrs();