cpufreq: rename index as driver_data in cpufreq_frequency_table

The "index" field of struct cpufreq_frequency_table was never an
index and isn't used at all by the cpufreq core.  It only is useful
for cpufreq drivers for their internal purposes.

Many people nowadays blindly set it in ascending order with the
assumption that the core will use it, which is a mistake.

Rename it to "driver_data" as that's what its purpose is. All of its
users are updated accordingly.

[rjw: Changelog]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/cpufreq/speedstep-centrino.c b/drivers/cpufreq/speedstep-centrino.c
index 618e6f417b1c..0915e712fbdc 100644
--- a/drivers/cpufreq/speedstep-centrino.c
+++ b/drivers/cpufreq/speedstep-centrino.c
@@ -79,11 +79,11 @@ static struct cpufreq_driver centrino_driver;
 
 /* Computes the correct form for IA32_PERF_CTL MSR for a particular
    frequency/voltage operating point; frequency in MHz, volts in mV.
-   This is stored as "index" in the structure. */
+   This is stored as "driver_data" in the structure. */
 #define OP(mhz, mv)                                                     \
         {                                                               \
                 .frequency = (mhz) * 1000,                              \
-                .index = (((mhz)/100) << 8) | ((mv - 700) / 16)         \
+                .driver_data = (((mhz)/100) << 8) | ((mv - 700) / 16)           \
         }
 
 /*
@@ -307,7 +307,7 @@ static unsigned extract_clock(unsigned msr, unsigned int cpu, int failsafe)
                 per_cpu(centrino_model, cpu)->op_points[i].frequency
                                                         != CPUFREQ_TABLE_END;
              i++) {
-                if (msr == per_cpu(centrino_model, cpu)->op_points[i].index)
+                if (msr == per_cpu(centrino_model, cpu)->op_points[i].driver_data)
                         return per_cpu(centrino_model, cpu)->
                                                         op_points[i].frequency;
         }
@@ -501,7 +501,7 @@ static int centrino_target (struct cpufreq_policy *policy,
                         break;
                 }
 
-                msr = per_cpu(centrino_model, cpu)->op_points[newstate].index;
+                msr = per_cpu(centrino_model, cpu)->op_points[newstate].driver_data;
 
                 if (first_cpu) {
                         rdmsr_on_cpu(good_cpu, MSR_IA32_PERF_CTL, &oldmsr, &h);