From a1a32d29f941b7219be07f9e76455a5e4ce4e9c4 Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Fri, 10 Apr 2015 12:50:57 +0200 Subject: [PATCH] x86/microcode/intel: Get rid of revision_is_newer() It is a one-liner for checking microcode header revisions. On top of that, it can be used wrong as it was the case in _save_mc(). Get rid of it. Signed-off-by: Borislav Petkov Acked-by: Quentin Casasnovas Cc: Borislav Petkov Cc: H. Peter Anvin Cc: Thomas Gleixner Signed-off-by: Ingo Molnar --- arch/x86/include/asm/microcode_intel.h | 6 ------ arch/x86/kernel/cpu/microcode/intel_early.c | 2 +- arch/x86/kernel/cpu/microcode/intel_lib.c | 6 +++--- 3 files changed, 4 insertions(+), 10 deletions(-) diff --git a/arch/x86/include/asm/microcode_intel.h b/arch/x86/include/asm/microcode_intel.h index 2b9209c46ca9..a4df6d292228 100644 --- a/arch/x86/include/asm/microcode_intel.h +++ b/arch/x86/include/asm/microcode_intel.h @@ -60,12 +60,6 @@ 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); -static inline int -revision_is_newer(struct microcode_header_intel *mc_header, int rev) -{ - return (mc_header->rev <= rev) ? 0 : 1; -} - #ifdef CONFIG_MICROCODE_INTEL_EARLY extern void __init load_ucode_intel_bsp(void); extern void load_ucode_intel_ap(void); diff --git a/arch/x86/kernel/cpu/microcode/intel_early.c b/arch/x86/kernel/cpu/microcode/intel_early.c index 2f49ab4ac0ae..a394350e6092 100644 --- a/arch/x86/kernel/cpu/microcode/intel_early.c +++ b/arch/x86/kernel/cpu/microcode/intel_early.c @@ -262,7 +262,7 @@ static unsigned int _save_mc(struct microcode_intel **mc_saved, found = 1; - if (!revision_is_newer(mc_hdr, new_rev)) + if (mc_hdr->rev <= mc_saved_hdr->rev) continue; /* diff --git a/arch/x86/kernel/cpu/microcode/intel_lib.c b/arch/x86/kernel/cpu/microcode/intel_lib.c index cd47a510a3f1..63b0a2e059ee 100644 --- a/arch/x86/kernel/cpu/microcode/intel_lib.c +++ b/arch/x86/kernel/cpu/microcode/intel_lib.c @@ -154,13 +154,13 @@ int get_matching_sig(unsigned int csig, int cpf, int rev, void *mc) /* * Returns 1 if update has been found, 0 otherwise. */ -int get_matching_microcode(unsigned int csig, int cpf, int rev, void *mc) +int get_matching_microcode(unsigned int csig, int cpf, int new_rev, void *mc) { struct microcode_header_intel *mc_hdr = mc; - if (!revision_is_newer(mc_hdr, rev)) + if (mc_hdr->rev <= new_rev) return 0; - return get_matching_sig(csig, cpf, rev, mc); + return get_matching_sig(csig, cpf, new_rev, mc); } EXPORT_SYMBOL_GPL(get_matching_microcode); -- 2.39.5