[PATCH 09/11] cpufreq: maple: Use 'index' only to index into policy->freq_table

From: Viresh Kumar <viresh.kumar@linaro.org>
To: Rafael Wysocki <rjw@rjwysocki.net>,
	Viresh Kumar <viresh.kumar@linaro.org>
Cc: linaro-kernel@lists.linaro.org, linux-pm@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>,
	Kevin Hilman <khilman@kernel.org>,
	Krzysztof Kozlowski <k.kozlowski@samsung.com>,
	Kukjin Kim <kgene@kernel.org>, Sekhar Nori <nsekhar@ti.com>,
	Shawn Guo <shawn.guo@freescale.com>,
	Steven Miao <realmz6@gmail.com>
Subject: [PATCH 09/11] cpufreq: maple: Use 'index' only to index into policy->freq_table
Date: Thu,  2 Jun 2016 19:49:09 +0530	[thread overview]
Message-ID: <4930072c05d216e86acd6246fdbc116bcc8026ac.1464876460.git.viresh.kumar@linaro.org> (raw)
In-Reply-To: <cover.1464876460.git.viresh.kumar@linaro.org>
In-Reply-To: <cover.1464876460.git.viresh.kumar@linaro.org>

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: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
 drivers/cpufreq/maple-cpufreq.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/cpufreq/maple-cpufreq.c b/drivers/cpufreq/maple-cpufreq.c
index d9df89392b84..8ce92ee7dd8d 100644
--- a/drivers/cpufreq/maple-cpufreq.c
+++ b/drivers/cpufreq/maple-cpufreq.c
@@ -133,6 +133,12 @@ static int maple_scom_query_freq(void)
 static int maple_cpufreq_target(struct cpufreq_policy *policy,
 	unsigned int index)
 {
+	/*
+	 * policy->freq_table may be sorted differently, get the index value we
+	 * are concerned about.
+	 */
+	index = policy->freq_table[index].driver_data;
+
 	return maple_scom_switch_freq(index);
 }
 
-- 
2.7.1.410.g6faf27b
