Good catch. On Wednesday, March 09, 2011 03:02:49 PM Naga Chumbalkar wrote: > > Return 0 on failure. This will cause the initialization of the driver > to fail and prevent the driver from loading if the BIOS cannot handle > the PCC interface command to "get frequency". Otherwise, the driver > will load and display a very high value like "4294967274" (which is > actually -EINVAL) for frequency: > > # cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq > 4294967274 > > Signed-off-by: Naga Chumbalkar <nagananda.chumbalkar@xxxxxx> Reviewed-by: Thomas Renninger <trenn@xxxxxxx> While this is not a regression, it's an easy fix. It should make sense to add: CC: stable@xxxxxxxxxx ? Thomas > --- > > diff --git a/arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c > index 4f6f679..4a5a42b 100644 > --- a/arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c > +++ b/arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c > @@ -195,7 +195,7 @@ static unsigned int pcc_get_freq(unsigned int cpu) > cmd_incomplete: > iowrite16(0, &pcch_hdr->status); > spin_unlock(&pcc_lock); > - return -EINVAL; > + return 0; > } > > static int pcc_cpufreq_target(struct cpufreq_policy *policy, > -- > To unsubscribe from this list: send the line "unsubscribe cpufreq" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
