x86/microcode/intel: Simplify get_matching_sig()

Unclutter function, make it a bit more readable, drop local
variables.

No functionality change.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1431860101-14847-4-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 8 insertions, 10 deletions

diff --git a/arch/x86/kernel/cpu/microcode/intel_lib.c b/arch/x86/kernel/cpu/microcode/intel_lib.c
index 1ffe507931af..def9c935f3f9 100644
--- a/arch/x86/kernel/cpu/microcode/intel_lib.c
+++ b/arch/x86/kernel/cpu/microcode/intel_lib.c
@@ -133,24 +133,22 @@ EXPORT_SYMBOL_GPL(microcode_sanity_check);
  */
 int get_matching_sig(unsigned int csig, int cpf, void *mc)
 {
-        struct microcode_header_intel *mc_header = mc;
-        struct extended_sigtable *ext_header;
-        unsigned long total_size = get_totalsize(mc_header);
-        int ext_sigcount, i;
+        struct microcode_header_intel *mc_hdr = mc;
+        struct extended_sigtable *ext_hdr;
         struct extended_signature *ext_sig;
+        int i;
 
-        if (cpu_signatures_match(csig, cpf, mc_header->sig, mc_header->pf))
+        if (cpu_signatures_match(csig, cpf, mc_hdr->sig, mc_hdr->pf))
                 return 1;
 
         /* Look for ext. headers: */
-        if (total_size <= get_datasize(mc_header) + MC_HEADER_SIZE)
+        if (get_totalsize(mc_hdr) <= get_datasize(mc_hdr) + MC_HEADER_SIZE)
                 return 0;
 
-        ext_header = mc + get_datasize(mc_header) + MC_HEADER_SIZE;
-        ext_sigcount = ext_header->count;
-        ext_sig = (void *)ext_header + EXT_HEADER_SIZE;
+        ext_hdr = mc + get_datasize(mc_hdr) + MC_HEADER_SIZE;
+        ext_sig = (void *)ext_hdr + EXT_HEADER_SIZE;
 
-        for (i = 0; i < ext_sigcount; i++) {
+        for (i = 0; i < ext_hdr->count; i++) {
                 if (cpu_signatures_match(csig, cpf, ext_sig->sig, ext_sig->pf))
                         return 1;
                 ext_sig++;