[CPUFREQ] speedstep-smi: it works on at least one P4M

The speedstep-smi driver actually works on >=1 notebook with a
Pentium 4-M CPU where all other cpufreq drivers fail. Therefore,
allow speedstep-smi on P4Ms again, but warn users of likely failure

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Dave Jones <davej@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/arch/i386/kernel/cpu/cpufreq/speedstep-smi.c b/arch/i386/kernel/cpu/cpufreq/speedstep-smi.c
index 79440b3f087e..b25fb6b635ae 100644
--- a/arch/i386/kernel/cpu/cpufreq/speedstep-smi.c
+++ b/arch/i386/kernel/cpu/cpufreq/speedstep-smi.c
@@ -357,6 +357,9 @@ static int __init speedstep_init(void)
         case SPEEDSTEP_PROCESSOR_PIII_C:
         case SPEEDSTEP_PROCESSOR_PIII_C_EARLY:
                 break;
+        case SPEEDSTEP_PROCESSOR_P4M:
+                printk(KERN_INFO "speedstep-smi: you're trying to use this cpufreq driver on a Pentium 4-based CPU. Most likely it will not work.\n");
+                break;
         default:
                 speedstep_processor = 0;
         }