From: Dan Carpenter <dan.carpenter@oracle.com>
To: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch] Thermal: cpufreq cooling: endian bug in cpufreq_get_max_state()
Date: Wed, 17 Apr 2013 07:18:28 +0000 [thread overview]
Message-ID: <20130417071828.GD7923@elgon.mountain> (raw)
This code doesn't work on big endian systems because we're storing low
values in the high bits of the unsigned long. It makes it a very high
value instead.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index 5f5c780..768b508 100644
--- a/drivers/thermal/cpu_cooling.c
+++ b/drivers/thermal/cpu_cooling.c
@@ -303,12 +303,12 @@ static int cpufreq_get_max_state(struct thermal_cooling_device *cdev,
struct cpufreq_cooling_device *cpufreq_device = cdev->devdata;
struct cpumask *mask = &cpufreq_device->allowed_cpus;
unsigned int cpu;
- unsigned long count = 0;
+ unsigned int count = 0;
int ret;
cpu = cpumask_any(mask);
- ret = get_property(cpu, 0, (unsigned int *)&count, GET_MAXL);
+ ret = get_property(cpu, 0, &count, GET_MAXL);
if (count > 0)
*state = count;
WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch] Thermal: cpufreq cooling: endian bug in cpufreq_get_max_state()
Date: Wed, 17 Apr 2013 10:18:28 +0300 [thread overview]
Message-ID: <20130417071828.GD7923@elgon.mountain> (raw)
This code doesn't work on big endian systems because we're storing low
values in the high bits of the unsigned long. It makes it a very high
value instead.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index 5f5c780..768b508 100644
--- a/drivers/thermal/cpu_cooling.c
+++ b/drivers/thermal/cpu_cooling.c
@@ -303,12 +303,12 @@ static int cpufreq_get_max_state(struct thermal_cooling_device *cdev,
struct cpufreq_cooling_device *cpufreq_device = cdev->devdata;
struct cpumask *mask = &cpufreq_device->allowed_cpus;
unsigned int cpu;
- unsigned long count = 0;
+ unsigned int count = 0;
int ret;
cpu = cpumask_any(mask);
- ret = get_property(cpu, 0, (unsigned int *)&count, GET_MAXL);
+ ret = get_property(cpu, 0, &count, GET_MAXL);
if (count > 0)
*state = count;
next reply other threads:[~2013-04-17 7:18 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-17 7:18 Dan Carpenter [this message]
2013-04-17 7:18 ` [patch] Thermal: cpufreq cooling: endian bug in cpufreq_get_max_state() Dan Carpenter
2013-04-17 15:45 ` Zhang Rui
2013-04-17 15:45 ` Zhang Rui
2013-04-17 16:55 ` Eduardo Valentin
2013-04-17 16:55 ` Eduardo Valentin
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