tree 5918c72fe4fbdf6f224f1e62661445870939e894
parent 17c10d61c750619324ee2a46c5a9e03a435fe212
author Jan Beulich <JBeulich@novell.com> 1286528378 -0400
committer Guenter Roeck <guenter.roeck@ericsson.com> 1288041081 -0700

hwmon: (coretemp) fix reading of microcode revision (v2)

According to the documentation, simply reading the respective MSR
isn't sufficient: It should be written with zeros, cpuid(1) be
executed, and then read (see arch/x86/kernel/cpu/intel.c for an
example).

v2: Fail probe when microcode revision cannot be determined, but is
needed to check for proper operation.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Chen Gong <gong.chen@linux.intel.com>
Cc: Jean Delvare <khali@linux-fr.org>
Acked-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>