linux-kernel - [PATCH 10/13] x86/microcode/intel: Move mc arg last in get_matching

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Date:	Tue, 24 Feb 2015 11:37:09 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	X86 ML <x86@...nel.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Quentin Casasnovas <quentin.casasnovas@...cle.com>
Subject: [PATCH 10/13] x86/microcode/intel: Move mc arg last in get_matching_{microcode|sig}

From: Borislav Petkov <bp@...e.de>

... arguments list so that it comes more natural for those functions to
have the signature, processor flags and revision together, before the
rest of the args.

No functionality change.

Signed-off-by: Borislav Petkov <bp@...e.de>
---
 arch/x86/include/asm/microcode_intel.h      |  5 ++---
 arch/x86/kernel/cpu/microcode/intel.c       |  4 ++--
 arch/x86/kernel/cpu/microcode/intel_early.c |  6 +++---
 arch/x86/kernel/cpu/microcode/intel_lib.c   | 16 +++++++---------
 4 files changed, 14 insertions(+), 17 deletions(-)

diff --git a/arch/x86/include/asm/microcode_intel.h b/arch/x86/include/asm/microcode_intel.h
index a6b753a131cd..2b9209c46ca9 100644
--- a/arch/x86/include/asm/microcode_intel.h
+++ b/arch/x86/include/asm/microcode_intel.h
@@ -56,10 +56,9 @@ struct extended_sigtable {
 
 #define exttable_size(et) ((et)->count * EXT_SIGNATURE_SIZE + EXT_HEADER_SIZE)
 
-extern int
-get_matching_microcode(unsigned int csig, int cpf, void *mc, int rev);
+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, void *mc, int rev);
+extern int get_matching_sig(unsigned int csig, int cpf, int rev, void *mc);
 
 static inline int
 revision_is_newer(struct microcode_header_intel *mc_header, int rev)
diff --git a/arch/x86/kernel/cpu/microcode/intel.c b/arch/x86/kernel/cpu/microcode/intel.c
index 746e7fd08aad..a41beadb3db9 100644
--- a/arch/x86/kernel/cpu/microcode/intel.c
+++ b/arch/x86/kernel/cpu/microcode/intel.c
@@ -124,7 +124,7 @@ static int get_matching_mc(struct microcode_intel *mc_intel, int cpu)
 	cpf = cpu_sig.pf;
 	crev = cpu_sig.rev;
 
-	return get_matching_microcode(csig, cpf, mc_intel, crev);
+	return get_matching_microcode(csig, cpf, crev, mc_intel);
 }
 
 static int apply_microcode_intel(int cpu)
@@ -226,7 +226,7 @@ static enum ucode_state generic_load_microcode(int cpu, void *data, size_t size,
 
 		csig = uci->cpu_sig.sig;
 		cpf = uci->cpu_sig.pf;
-		if (get_matching_microcode(csig, cpf, mc, new_rev)) {
+		if (get_matching_microcode(csig, cpf, new_rev, mc)) {
 			vfree(new_mc);
 			new_rev = mc_header.rev;
 			new_mc  = mc;
diff --git a/arch/x86/kernel/cpu/microcode/intel_early.c b/arch/x86/kernel/cpu/microcode/intel_early.c
index 2dd8121c979d..51c0b8093c1b 100644
--- a/arch/x86/kernel/cpu/microcode/intel_early.c
+++ b/arch/x86/kernel/cpu/microcode/intel_early.c
@@ -50,8 +50,8 @@ load_microcode_early(struct microcode_intel **saved,
 
 		ret = get_matching_microcode(uci->cpu_sig.sig,
 					     uci->cpu_sig.pf,
-					     ucode_ptr,
-					     new_rev);
+					     new_rev,
+					     ucode_ptr);
 		if (!ret)
 			continue;
 
@@ -252,7 +252,7 @@ static unsigned int _save_mc(struct microcode_intel **mc_saved,
 		pf	     = mc_saved_hdr->pf;
 		new_rev	     = mc_hdr->rev;
 
-		if (!get_matching_sig(sig, pf, ucode_ptr, new_rev))
+		if (!get_matching_sig(sig, pf, new_rev, ucode_ptr))
 			continue;
 
 		found = 1;
diff --git a/arch/x86/kernel/cpu/microcode/intel_lib.c b/arch/x86/kernel/cpu/microcode/intel_lib.c
index 7e259d99b0aa..cd47a510a3f1 100644
--- a/arch/x86/kernel/cpu/microcode/intel_lib.c
+++ b/arch/x86/kernel/cpu/microcode/intel_lib.c
@@ -122,10 +122,9 @@ int microcode_sanity_check(void *mc, int print_err)
 EXPORT_SYMBOL_GPL(microcode_sanity_check);
 
 /*
- * return 0 - no update found
- * return 1 - found update
+ * Returns 1 if update has been found, 0 otherwise.
  */
-int get_matching_sig(unsigned int csig, int cpf, void *mc, int rev)
+int get_matching_sig(unsigned int csig, int cpf, int rev, void *mc)
 {
 	struct microcode_header_intel *mc_header = mc;
 	struct extended_sigtable *ext_header;
@@ -153,16 +152,15 @@ int get_matching_sig(unsigned int csig, int cpf, void *mc, int rev)
 }
 
 /*
- * return 0 - no update found
- * return 1 - found update
+ * Returns 1 if update has been found, 0 otherwise.
  */
-int get_matching_microcode(unsigned int csig, int cpf, void *mc, int rev)
+int get_matching_microcode(unsigned int csig, int cpf, int rev, void *mc)
 {
-	struct microcode_header_intel *mc_header = mc;
+	struct microcode_header_intel *mc_hdr = mc;
 
-	if (!revision_is_newer(mc_header, rev))
+	if (!revision_is_newer(mc_hdr, rev))
 		return 0;
 
-	return get_matching_sig(csig, cpf, mc, rev);
+	return get_matching_sig(csig, cpf, rev, mc);
 }
 EXPORT_SYMBOL_GPL(get_matching_microcode);
-- 
2.2.0.33.gc18b867

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