From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Wed, 1 Nov 2006 04:53:00 +0000 (+1100)
Subject: [POWERPC] pmac_feature_call checks platform
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=0eb2e6019ae8e76a537bdca07b31e1524a3bba48;p=linux-beck.git

[POWERPC] pmac_feature_call checks platform

This patch makes sure that a caller of pmac_call_feature() won't try
to call into ppc_md.feature_call of another platform, which might
happen if some powermac drivers are loaded on non-powermac machines.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---

diff --git a/include/asm-powerpc/pmac_feature.h b/include/asm-powerpc/pmac_feature.h
index d3599cc9aa74..d43d91beba9b 100644
--- a/include/asm-powerpc/pmac_feature.h
+++ b/include/asm-powerpc/pmac_feature.h
@@ -146,7 +146,7 @@ struct device_node;
 static inline long pmac_call_feature(int selector, struct device_node* node,
 					long param, long value)
 {
-	if (!ppc_md.feature_call)
+	if (!ppc_md.feature_call || !machine_is(powermac))
 		return -ENODEV;
 	return ppc_md.feature_call(selector, node, param, value);
 }