powerpc/vdso: Combine start/size variables

In vdso_fixup_features() we have start64/start32 and size64/size32, but
they have the same types, ie. void * and unsigned long.

They're only used to save the return value from find_sectionXX() for the
subsequent call to do_feature_fixups(), so there's no overlap in their
usage either.

So we can just consolidate them into start/size and avoid the
duplication.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/kernel/vdso.c

@@ -525,55 +525,52 @@ static __init int vdso_fixup_datapage(struct lib32_elfinfo *v32,
 static __init int vdso_fixup_features(struct lib32_elfinfo *v32,
 				      struct lib64_elfinfo *v64)
 {
-	void *start32;
-	unsigned long size32;
+	unsigned long size;
+	void *start;
 
 #ifdef CONFIG_PPC64
-	void *start64;
-	unsigned long size64;
-
-	start64 = find_section64(v64->hdr, "__ftr_fixup", &size64);
-	if (start64)
+	start = find_section64(v64->hdr, "__ftr_fixup", &size);
+	if (start)
 		do_feature_fixups(cur_cpu_spec->cpu_features,
-				  start64, start64 + size64);
+				  start, start + size);
 
-	start64 = find_section64(v64->hdr, "__mmu_ftr_fixup", &size64);
-	if (start64)
+	start = find_section64(v64->hdr, "__mmu_ftr_fixup", &size);
+	if (start)
 		do_feature_fixups(cur_cpu_spec->mmu_features,
-				  start64, start64 + size64);
+				  start, start + size);
 
-	start64 = find_section64(v64->hdr, "__fw_ftr_fixup", &size64);
-	if (start64)
+	start = find_section64(v64->hdr, "__fw_ftr_fixup", &size);
+	if (start)
 		do_feature_fixups(powerpc_firmware_features,
-				  start64, start64 + size64);
+				  start, start + size);
 
-	start64 = find_section64(v64->hdr, "__lwsync_fixup", &size64);
-	if (start64)
+	start = find_section64(v64->hdr, "__lwsync_fixup", &size);
+	if (start)
 		do_lwsync_fixups(cur_cpu_spec->cpu_features,
-				 start64, start64 + size64);
+				 start, start + size);
 #endif /* CONFIG_PPC64 */
 
-	start32 = find_section32(v32->hdr, "__ftr_fixup", &size32);
-	if (start32)
+	start = find_section32(v32->hdr, "__ftr_fixup", &size);
+	if (start)
 		do_feature_fixups(cur_cpu_spec->cpu_features,
-				  start32, start32 + size32);
+				  start, start + size);
 
-	start32 = find_section32(v32->hdr, "__mmu_ftr_fixup", &size32);
-	if (start32)
+	start = find_section32(v32->hdr, "__mmu_ftr_fixup", &size);
+	if (start)
 		do_feature_fixups(cur_cpu_spec->mmu_features,
-				  start32, start32 + size32);
+				  start, start + size);
 
 #ifdef CONFIG_PPC64
-	start32 = find_section32(v32->hdr, "__fw_ftr_fixup", &size32);
-	if (start32)
+	start = find_section32(v32->hdr, "__fw_ftr_fixup", &size);
+	if (start)
 		do_feature_fixups(powerpc_firmware_features,
-				  start32, start32 + size32);
+				  start, start + size);
 #endif /* CONFIG_PPC64 */
 
-	start32 = find_section32(v32->hdr, "__lwsync_fixup", &size32);
-	if (start32)
+	start = find_section32(v32->hdr, "__lwsync_fixup", &size);
+	if (start)
 		do_lwsync_fixups(cur_cpu_spec->cpu_features,
-				 start32, start32 + size32);
+				 start, start + size);
 
 	return 0;
 }