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authorThomas, Sujith <sujith.thomas@intel.com>2008-11-05 11:45:13 +0100
committerLen Brown <len.brown@intel.com>2008-11-07 02:24:24 +0100
commitd65dcdcf0cd55b4be1fd1f5025388e91042d63fc (patch)
treef02facdf511a45c43b324f3100f12927228582eb /drivers
parentACPI: remove CONFIG_ACPI_EC (diff)
downloadlinux-d65dcdcf0cd55b4be1fd1f5025388e91042d63fc.tar.xz
linux-d65dcdcf0cd55b4be1fd1f5025388e91042d63fc.zip
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>
Diffstat (limited to 'drivers')
-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 124b37ddb5c1..27b7662955bb 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)
{