linux-kernel - [PATCH v3 -next] powerpc/powermac: Fix symbol not declared warnings

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Message-ID: <20221103070122.340773-1-chenlifu@huawei.com>
Date:   Thu, 3 Nov 2022 15:01:22 +0800
From:   Chen Lifu <chenlifu@...wei.com>
To:     <benh@...nel.crashing.org>, <mpe@...erman.id.au>,
        <npiggin@...il.com>, <christophe.leroy@...roup.eu>,
        <nick.child@....com>, <zhengzucheng@...wei.com>,
        <linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>
CC:     <chenlifu@...wei.com>
Subject: [PATCH v3 -next] powerpc/powermac: Fix symbol not declared warnings

1. ppc_override_l2cr and ppc_override_l2cr_value are only used in
    l2cr_init() function, remove them and used *l2cr directly.
2. has_l2cache is not used outside of the file, so mark it static and
    do not initialise statics to 0.

Fixes the following warning:

arch/powerpc/platforms/powermac/setup.c:73:5: warning: symbol
'ppc_override_l2cr' was not declared. Should it be static?
arch/powerpc/platforms/powermac/setup.c:74:5: warning: symbol
'ppc_override_l2cr_value' was not declared. Should it be static?
arch/powerpc/platforms/powermac/setup.c:75:5: warning: symbol
'has_l2cache' was not declared. Should it be static?

Signed-off-by: Chen Lifu <chenlifu@...wei.com>
---
 arch/powerpc/platforms/powermac/setup.c | 19 ++++++-------------
 1 file changed, 6 insertions(+), 13 deletions(-)

diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c
index 04daa7f0a03c..cb9a3290849a 100644
--- a/arch/powerpc/platforms/powermac/setup.c
+++ b/arch/powerpc/platforms/powermac/setup.c
@@ -68,13 +68,11 @@
 
 #include "pmac.h"
 
 #undef SHOW_GATWICK_IRQS
 
-int ppc_override_l2cr = 0;
-int ppc_override_l2cr_value;
-int has_l2cache = 0;
+static int has_l2cache;
 
 int pmac_newworld;
 
 static int current_root_goodness = -1;
 
@@ -234,26 +232,21 @@ static void __init l2cr_init(void)
 
 		for_each_of_cpu_node(np) {
 			const unsigned int *l2cr =
 				of_get_property(np, "l2cr-value", NULL);
 			if (l2cr) {
-				ppc_override_l2cr = 1;
-				ppc_override_l2cr_value = *l2cr;
 				_set_L2CR(0);
-				_set_L2CR(ppc_override_l2cr_value);
+				_set_L2CR(*l2cr);
+				pr_info("L2CR overridden (0x%x), "
+					"backside cache is %s\n",
+					*l2cr, ((*l2cr) & 0x80000000) ?
+					"enabled" : "disabled");
 			}
 			of_node_put(np);
 			break;
 		}
 	}
-
-	if (ppc_override_l2cr)
-		printk(KERN_INFO "L2CR overridden (0x%x), "
-		       "backside cache is %s\n",
-		       ppc_override_l2cr_value,
-		       (ppc_override_l2cr_value & 0x80000000)
-				? "enabled" : "disabled");
 }
 #endif
 
 static void __init pmac_setup_arch(void)
 {
-- 
2.37.1