x86: fix sparse warnings in intel_cacheinfo.c

arch/x86/kernel/cpu/intel_cacheinfo.c:355:7: warning: symbol 'i' shadows an earlier one
arch/x86/kernel/cpu/intel_cacheinfo.c:296:39: originally declared here
arch/x86/kernel/cpu/intel_cacheinfo.c:367:18: warning: incorrect type in argument 2 (different signedness)
arch/x86/kernel/cpu/intel_cacheinfo.c:367:18:    expected unsigned int *eax
arch/x86/kernel/cpu/intel_cacheinfo.c:367:18:    got int *
arch/x86/kernel/cpu/intel_cacheinfo.c:367:28: warning: incorrect type in argument 3 (different signedness)
arch/x86/kernel/cpu/intel_cacheinfo.c:367:28:    expected unsigned int *ebx
arch/x86/kernel/cpu/intel_cacheinfo.c:367:28:    got int *
arch/x86/kernel/cpu/intel_cacheinfo.c:367:38: warning: incorrect type in argument 4 (different signedness)
arch/x86/kernel/cpu/intel_cacheinfo.c:367:38:    expected unsigned int *ecx
arch/x86/kernel/cpu/intel_cacheinfo.c:367:38:    got int *
arch/x86/kernel/cpu/intel_cacheinfo.c:367:48: warning: incorrect type in argument 5 (different signedness)
arch/x86/kernel/cpu/intel_cacheinfo.c:367:48:    expected unsigned int *edx
arch/x86/kernel/cpu/intel_cacheinfo.c:367:48:    got int *
Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/kernel/cpu/intel_cacheinfo.c

@@ -352,8 +352,8 @@ unsigned int __cpuinit init_intel_cacheinfo(struct cpuinfo_x86 *c)
 	 */
 	if ((num_cache_leaves == 0 || c->x86 == 15) && c->cpuid_level > 1) {
 		/* supports eax=2  call */
-		int i, j, n;
-		int regs[4];
+		int j, n;
+		unsigned int regs[4];
 		unsigned char *dp = (unsigned char *)regs;
 		int only_trace = 0;
 
@@ -368,7 +368,7 @@ unsigned int __cpuinit init_intel_cacheinfo(struct cpuinfo_x86 *c)
 
 			/* If bit 31 is set, this is an unknown format */
 			for ( j = 0 ; j < 3 ; j++ ) {
-				if ( regs[j] < 0 ) regs[j] = 0;
+				if (regs[j] & (1 << 31)) regs[j] = 0;
 			}
 
 			/* Byte 0 is level count, not a descriptor */