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authorThomas, Sujith <sujith.thomas@intel.com>2008-11-05 16:15:13 +0530
committerLen Brown <len.brown@intel.com>2008-11-06 20:24:24 -0500
commitd65dcdcf0cd55b4be1fd1f5025388e91042d63fc (patch)
treef02facdf511a45c43b324f3100f12927228582eb
parent8950d89acaa8c353869e681772479d7955ae6f7a (diff)
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intel_menlow: Add comment documenting legal GTHS values
Signed-off-by: Sujith Thomas <sujith.thomas@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
-rw-r--r--drivers/misc/intel_menlow.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/misc/intel_menlow.c b/drivers/misc/intel_menlow.c
index 124b37ddb5c..27b7662955b 100644
--- a/drivers/misc/intel_menlow.c
+++ b/drivers/misc/intel_menlow.c
@@ -52,6 +52,11 @@ MODULE_LICENSE("GPL");
#define MEMORY_ARG_CUR_BANDWIDTH 1
#define MEMORY_ARG_MAX_BANDWIDTH 0
+/*
+ * GTHS returning 'n' would mean that [0,n-1] states are supported
+ * In that case max_cstate would be n-1
+ * GTHS returning '0' would mean that no bandwidth control states are supported
+ */
static int memory_get_int_max_bandwidth(struct thermal_cooling_device *cdev,
unsigned long *max_state)
{