On Tue, 11 May 2010 16:01:12 +0800, Huaxu Wan said:
> The thermal sensors of Intel(R) CPUs can be detected by CPUID instruction,
> indicated by CPUID.06H.EAX[0].
>
> Signed-off-by: Huaxu Wan <huaxu.wan@xxxxxxxxxxxxxxx>
> Signed-off-by: Carsten Emde <C.Emde@xxxxxxxxx>
> ---
> drivers/hwmon/coretemp.c | 34 +++++++++++++---------------------
> 1 files changed, 13 insertions(+), 21 deletions(-)
>
> diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c
> index e9b7fbc..be0ddcf 100644
> --- a/drivers/hwmon/coretemp.c
> +++ b/drivers/hwmon/coretemp.c
> @@ -451,28 +451,20 @@ static int __init coretemp_init(void)
>
> for_each_online_cpu(i) {
> struct cpuinfo_x86 *c = &cpu_data(i);
> + /*
> + * CPUID.06H.EAX[0] indicates whether the CPU has thermal
> + * sensors. We check this bit only, all the early CPUs
> + * without thermal sensors will be filtered out.
> + */
> + if (c->cpuid_level >= 6 && (cpuid_eax(0x06) & 0x01)) {
> + err = coretemp_device_add(i);
> + if (err)
> + goto exit_devices_unreg;
OK, that looks sane. :) For what it's worth, feel free to stick on a
Reviewed-By: Valdis Kletnieks <valdis.kletnieks@xxxxxx>
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