[PATCH] Fix problem with cpufreq_pndemand or cpufreq_conservative

From: Larry Finger
Date: Fri Dec 28 2012 - 17:17:23 EST


Since commit 2aacdff entitled "cpufreq: Move common part from governors to separate file", whenever the drivers that depend on this new file (cpufreq_ondemand or cpufreq_conservative) are built as modules, a new module named cpufreq_governor is created. It seems that kmake is smart enough to create a separate module whenever more than one module includes the same object file. As drivers/cpufreq/cpufreq_governor.c contains no MODULE directives, the resulting module has no license specified, which results in logging of a "module license 'unspecified' taints kernel". In addition, a number of globals are exported GPL only, and are therefore not available.

Signed-off-by: Larry Finger <Larry.Finger@xxxxxxxxxxxx>
---

This particular patch is the simplest possible; however, it hides the intent. I have prepared the longer version that makes the reason clearer by adding a new configuration variable that is dependent on the other two, and rearranges drivers/cpufreq/Makefile. That version could be submitted if that is what is desired. The changes to cpufreq_governor.c are the same as in this version.

Larry


cpufreq_governor.c | 5 +++++
1 file changed, 5 insertions(+)
---
Index: wireless-testing-new/drivers/cpufreq/cpufreq_governor.c
===================================================================
--- wireless-testing-new.orig/drivers/cpufreq/cpufreq_governor.c
+++ wireless-testing-new/drivers/cpufreq/cpufreq_governor.c
@@ -25,6 +25,7 @@
#include <linux/tick.h>
#include <linux/types.h>
#include <linux/workqueue.h>
+#include <linux/module.h>

#include "cpufreq_governor.h"

@@ -316,3 +317,7 @@ second_time:
return 0;
}
EXPORT_SYMBOL_GPL(cpufreq_governor_dbs);
+MODULE_AUTHOR("Alexander Clouter <alex@xxxxxxxxxxxxx>");
+MODULE_DESCRIPTION("'cpufreq_governor' - A mini-module containing "
+ "common code for cpufreq_conservative and cpufreq_ondemand");
+MODULE_LICENSE("GPL");






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