[PATCH 06/11] cpufreq: exynos: Use 'index' only to index into policy->freq_table

[Viresh Kumar]

Later patches would make changes in cpufreq core, after which
policy->freq_table may be reordered by cpufreq core and it wouldn't be
safe anymore to use 'index' for any other local arrays.

To prepare for that, use policy->freq_table[index].driver_data for other
driver specific usage of 'index'. The 'driver_data' fields are already
set properly by the driver.

Cc: Kukjin Kim <kg...@kernel.org>
Cc: Krzysztof Kozlowski <k.kozlow...@samsung.com>
Signed-off-by: Viresh Kumar <viresh.ku...@linaro.org>
---
 drivers/cpufreq/exynos5440-cpufreq.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/cpufreq/exynos5440-cpufreq.c 
b/drivers/cpufreq/exynos5440-cpufreq.c
index 085f07d31ef0..6138cbb7594e 100644
--- a/drivers/cpufreq/exynos5440-cpufreq.c
+++ b/drivers/cpufreq/exynos5440-cpufreq.c
@@ -210,7 +210,7 @@ static void exynos_enable_dvfs(unsigned int cur_frequency)
 
 static int exynos_target(struct cpufreq_policy *policy, unsigned int index)
 {
-       unsigned int tmp;
+       unsigned int tmp, rindex;
        int i;
 
        mutex_lock(&cpufreq_lock);
@@ -218,13 +218,19 @@ static int exynos_target(struct cpufreq_policy *policy, 
unsigned int index)
        freqs.old = policy->cur;
        freqs.new = policy->freq_table[index].frequency;
 
+       /*
+        * policy->freq_table may be sorted differently, get the index value we
+        * are concerned about.
+        */
+       rindex = policy->freq_table[index].driver_data;
+
        cpufreq_freq_transition_begin(policy, &freqs);
 
        /* Set the target frequency in all C0_3_PSTATE register */
        for_each_cpu(i, policy->cpus) {
                tmp = __raw_readl(dvfs_info->base + XMU_C0_3_PSTATE + i * 4);
                tmp &= ~(P_VALUE_MASK << C0_3_PSTATE_NEW_SHIFT);
-               tmp |= (index << C0_3_PSTATE_NEW_SHIFT);
+               tmp |= (rindex << C0_3_PSTATE_NEW_SHIFT);
 
                __raw_writel(tmp, dvfs_info->base + XMU_C0_3_PSTATE + i * 4);
        }
-- 
2.7.1.410.g6faf27b