x86/microcode/intel: Remove unused @rev arg of get_matching_sig()

@rev wasn't used in get_matching_sig(), drop it.
Signed-off-by: NBorislav Petkov <bp@suse.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: NIngo Molnar <mingo@kernel.org>

arch/x86/include/asm/microcode_intel.h

@@ -58,7 +58,7 @@ struct extended_sigtable {
 
 extern int get_matching_microcode(unsigned int csig, int cpf, int rev, void *mc);
 extern int microcode_sanity_check(void *mc, int print_err);
-extern int get_matching_sig(unsigned int csig, int cpf, int rev, void *mc);
+extern int get_matching_sig(unsigned int csig, int cpf, void *mc);
 
 #ifdef CONFIG_MICROCODE_INTEL_EARLY
 extern void __init load_ucode_intel_bsp(void);

arch/x86/kernel/cpu/microcode/intel_early.c

@@ -246,7 +246,7 @@ static unsigned int _save_mc(struct microcode_intel **mc_saved,
 			     u8 *ucode_ptr, unsigned int num_saved)
 {
 	struct microcode_header_intel *mc_hdr, *mc_saved_hdr;
-	unsigned int sig, pf, new_rev;
+	unsigned int sig, pf;
 	int found = 0, i;
 
 	mc_hdr = (struct microcode_header_intel *)ucode_ptr;
@@ -255,9 +255,8 @@ static unsigned int _save_mc(struct microcode_intel **mc_saved,
 		mc_saved_hdr = (struct microcode_header_intel *)mc_saved[i];
 		sig	     = mc_saved_hdr->sig;
 		pf	     = mc_saved_hdr->pf;
-		new_rev	     = mc_hdr->rev;
 
-		if (!get_matching_sig(sig, pf, new_rev, ucode_ptr))
+		if (!get_matching_sig(sig, pf, ucode_ptr))
 			continue;
 
 		found = 1;

arch/x86/kernel/cpu/microcode/intel_lib.c

@@ -124,7 +124,7 @@ EXPORT_SYMBOL_GPL(microcode_sanity_check);
 /*
  * Returns 1 if update has been found, 0 otherwise.
  */
-int get_matching_sig(unsigned int csig, int cpf, int rev, void *mc)
+int get_matching_sig(unsigned int csig, int cpf, void *mc)
 {
 	struct microcode_header_intel *mc_header = mc;
 	struct extended_sigtable *ext_header;
@@ -161,6 +161,6 @@ int get_matching_microcode(unsigned int csig, int cpf, int new_rev, void *mc)
 	if (mc_hdr->rev <= new_rev)
 		return 0;
 
-	return get_matching_sig(csig, cpf, new_rev, mc);
+	return get_matching_sig(csig, cpf, mc);
 }
 EXPORT_SYMBOL_GPL(get_matching_microcode);