x86/microcode/intel: Simplify generic_load_microcode()

Make it return the ucode_state directly instead of assigning to a state
variable and jumping to an out: label.

No functionality change.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20161025095522.11964-4-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/arch/x86/kernel/cpu/microcode/intel.c b/arch/x86/kernel/cpu/microcode/intel.c
index cdc0dea..b84288e 100644 (file)
--- a/arch/x86/kernel/cpu/microcode/intel.c
+++ b/arch/x86/kernel/cpu/microcode/intel.c
@@ -962,7 +962,6 @@ static enum ucode_state generic_load_microcode(int cpu, void *data, size_t size,
        u8 *ucode_ptr = data, *new_mc = NULL, *mc = NULL;
        int new_rev = uci->cpu_sig.rev;
        unsigned int leftover = size;
-       enum ucode_state state = UCODE_OK;
        unsigned int curr_mc_size = 0;
        unsigned int csig, cpf;
 
@@ -1015,14 +1014,11 @@ static enum ucode_state generic_load_microcode(int cpu, void *data, size_t size,
 
        if (leftover) {
                vfree(new_mc);
-               state = UCODE_ERROR;
-               goto out;
+               return UCODE_ERROR;
        }
 
-       if (!new_mc) {
-               state = UCODE_NFOUND;
-               goto out;
-       }
+       if (!new_mc)
+               return UCODE_NFOUND;
 
        vfree(uci->mc);
        uci->mc = (struct microcode_intel *)new_mc;
@@ -1036,8 +1032,8 @@ static enum ucode_state generic_load_microcode(int cpu, void *data, size_t size,
 
        pr_debug("CPU%d found a matching microcode update with version 0x%x (current=0x%x)\n",
                 cpu, new_rev, uci->cpu_sig.rev);
-out:
-       return state;
+
+       return UCODE_OK;
 }
 
 static int get_ucode_fw(void *to, const void *from, size_t n)