[coreboot-gerrit] Patch set updated for coreboot: 8b7337e Don't attempt to use null pointer (happens when no cpu_microcode_blob.bin is available) as microcode update

[Vladimir Serbinenko]

Vladimir Serbinenko ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/2990

-gerrit

commit 8b7337e8f43c5d3536b8556116406e207c05aea3
Author: Vladimir Serbinenko 
Date:   Sat Mar 30 12:04:23 2013 +0100

Don't attempt to use null pointer (happens when no cpu_microcode_blob.bin is available) as microcode update

Change-Id: I6e18fd37256910bf047061e4633a66cf29ad7b69
    Signed-off-by: Vladimir Serbinenko 
---
 src/cpu/intel/microcode/microcode.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/cpu/intel/microcode/microcode.c b/src/cpu/intel/microcode/microcode.c
index d908c25..0cf480d 100644
--- a/src/cpu/intel/microcode/microcode.c
+++ b/src/cpu/intel/microcode/microcode.c
@@ -130,6 +130,9 @@ const void *intel_microcode_find(void)
    				       CBFS_TYPE_MICROCODE);
 #endif

+	/* No need for explicit error message since the user already gets
+	   "file not found" from cbfs.
+	 */
    if (!microcode_updates)
    	return microcode_updates;

@@ -202,6 +205,9 @@ void intel_update_microcode(const void *microcode_updates)
    const char *c;
    msr_t msr;

+	if (!microcode_updates)
+	  return;
+
    /* CPUID sets MSR 0x8B iff a microcode update has been loaded. */
    msr.lo = 0;
    msr.hi = 0;