Re: Fw: powersave not working with amd64 on nforce 4 board

["Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org>]

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Hi,

On Thursday, 28 of July 2005 01:16, Andrew Morton wrote:
> 
> It might help if you were to raise a bugzilla entry for this..

More likely it's BIOS bug.  I ran 2.6.13-rc3-mm1 on a box with nForce4
and it worked fine except I needed to apply the attached patch from
Mark Langsdorf, since the CPU is a dual-core.

BTW, any chance to include this patch in -mm?

Greets,
Rafael


> Begin forwarded message:
> 
> Date: Thu, 28 Jul 2005 00:26:18 +0200
> From: Florian Engelhardt <flo-MALAOO1t6vMdnm+yROfE0A@public.gmane.org>
> To: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> Subject: powersave not working with amd64 on nforce 4 board
> 
> 
> Hello,
> 
> powersaving is not working with a 2.6.12-rc3-mm1 kernel and a amd64
> 3500+ on a nvidia nforce 4 mainboard.
> syslog tells me the following about it:
> 
> ..
> ACPI: Processor [CPU0] (supports 8 throttling states)
> ..
> powernow-k8: Found 1 AMD Athlon 64 / Opteron processors (version 1.40.2)
> acpi_processor-0252 [04] acpi_processor_get_per: Error evaluating _PSS
> powernow-k8: BIOS error - no PSB or ACPI _PSS objects
> acpi_processor-0252 [04] acpi_processor_get_per: Error evaluating _PSS
> 
> kind regards
> 
> flo
> 
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-- 
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- That depends a good deal on where you want to get to.
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--- linux-2.6.12-rc6/arch/i386/kernel/cpu/cpufreq/powernow-k8.c.old	2005-06-12 17:41:55.123651184 -0500
+++ linux-2.6.12-rc6/arch/i386/kernel/cpu/cpufreq/powernow-k8.c	2005-06-12 17:46:32.780440936 -0500
@@ -44,7 +44,7 @@
 
 #define PFX "powernow-k8: "
 #define BFX PFX "BIOS error: "
-#define VERSION "version 1.40.2"
+#define VERSION "version 1.40.4"
 #include "powernow-k8.h"
 
 /* serialize freq changes  */
@@ -978,7 +978,7 @@
 {
 	struct powernow_k8_data *data;
 	cpumask_t oldmask = CPU_MASK_ALL;
-	int rc;
+	int rc, i;
 
 	if (!check_supported_cpu(pol->cpu))
 		return -ENODEV;
@@ -1064,7 +1064,9 @@
 	printk("cpu_init done, current fid 0x%x, vid 0x%x\n",
 	       data->currfid, data->currvid);
 
-	powernow_data[pol->cpu] = data;
+	for_each_cpu_mask(i, cpu_core_map[pol->cpu]) {
+		powernow_data[i] = data;
+	}
 
 	return 0;