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authorLinus Torvalds <torvalds@linux-foundation.org>2008-05-23 09:24:52 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-05-23 09:24:52 -0700
commite6b027a398bcfbb8897353a88a2edfcc97fd604d (patch)
treeac4333e8e21c4c527a9e9fb9e7529542bcad7ec1 /arch
parent57f7bd5b455298dbe94227aa1fedbbfe63bbf252 (diff)
parent4f74369422b883164c50b5936517d010a3e1ce59 (diff)
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq: [CPUFREQ] clarify license of freq_table.c [CPUFREQ] Remove documentation of removed ondemand tunable. [CPUFREQ] Crusoe: longrun cpufreq module reports false min freq [CPUFREQ] powernow-k8: improve error messages
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/cpu/cpufreq/longrun.c2
-rw-r--r--arch/x86/kernel/cpu/cpufreq/powernow-k8.c15
2 files changed, 14 insertions, 3 deletions
diff --git a/arch/x86/kernel/cpu/cpufreq/longrun.c b/arch/x86/kernel/cpu/cpufreq/longrun.c
index af4a867a097c..777a7ff075de 100644
--- a/arch/x86/kernel/cpu/cpufreq/longrun.c
+++ b/arch/x86/kernel/cpu/cpufreq/longrun.c
@@ -245,7 +245,7 @@ static unsigned int __init longrun_determine_freqs(unsigned int *low_freq,
if ((ecx > 95) || (ecx == 0) || (eax < ebx))
return -EIO;
- edx = (eax - ebx) / (100 - ecx);
+ edx = ((eax - ebx) * 100) / (100 - ecx);
*low_freq = edx * 1000; /* back to kHz */
dprintk("low frequency is %u kHz\n", *low_freq);
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index 46d4034d9f37..206791eb46e3 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -1127,12 +1127,23 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
* an UP version, and is deprecated by AMD.
*/
if (num_online_cpus() != 1) {
- printk(KERN_ERR PFX "MP systems not supported by PSB BIOS structure\n");
+#ifndef CONFIG_ACPI_PROCESSOR
+ printk(KERN_ERR PFX "ACPI Processor support is required "
+ "for SMP systems but is absent. Please load the "
+ "ACPI Processor module before starting this "
+ "driver.\n");
+#else
+ printk(KERN_ERR PFX "Your BIOS does not provide ACPI "
+ "_PSS objects in a way that Linux understands. "
+ "Please report this to the Linux ACPI maintainers"
+ " and complain to your BIOS vendor.\n");
+#endif
kfree(data);
return -ENODEV;
}
if (pol->cpu != 0) {
- printk(KERN_ERR PFX "No _PSS objects for CPU other than CPU0\n");
+ printk(KERN_ERR PFX "No ACPI _PSS objects for CPU other than "
+ "CPU0. Complain to your BIOS vendor.\n");
kfree(data);
return -ENODEV;
}