[CPUFREQ] powernow-k8: Only print error message once, not per core.

This is the typical message you get if you plug in a CPU
which is newer than your BIOS. It's annoying seeing this
message for each core.

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Dave Jones <davej@redhat.com>

1 files changed, 15 insertions, 6 deletions

diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index acc06b03194e..c44853fc827a 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -794,7 +794,7 @@ static int find_psb_table(struct powernow_k8_data *data)
          * BIOS and Kernel Developer's Guide, which is available on
          * www.amd.com
          */
-        printk(KERN_ERR PFX "BIOS error - no PSB or ACPI _PSS objects\n");
+        printk(KERN_ERR FW_BUG PFX "No PSB or ACPI _PSS objects\n");
         return -ENODEV;
 }
 
@@ -1218,6 +1218,7 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
         struct powernow_k8_data *data;
         cpumask_t oldmask;
         int rc;
+        static int print_once;
 
         if (!cpu_online(pol->cpu))
                 return -ENODEV;
@@ -1240,11 +1241,19 @@ 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 FW_BUG 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");
+                        /*
+                         * Replace this one with print_once as soon as such a
+                         * thing gets introduced
+                         */
+                        if (!print_once) {
+                                WARN_ONCE(1, KERN_ERR FW_BUG 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");
+                                print_once++;
+                        }
                         kfree(data);
                         return -ENODEV;
                 }