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platform/x86: GPD pocket fan: Set speed to max on get_temp failure

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When we fail to get the temperature, assume the worst and set the speed
to max.

While at it introduce a define for MAX_SPEED.

Cc: James <kernel@madingley.org>
Suggested-by: James <kernel@madingley.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Hans de Goede 2018-01-19 21:47:07 +01:00 committed by Andy Shevchenko
parent 00f8b2fce4
commit d890acf728
1 changed files with 6 additions and 4 deletions
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10
drivers/platform/x86/gpd-pocket-fan.c
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@ -13,6 +13,8 @@
#include <linux/thermal.h>
#include <linux/workqueue.h>
#define MAX_SPEED 3
static int temp_limits[3] = { 55000, 60000, 65000 };
module_param_array(temp_limits, int, NULL, 0444);
MODULE_PARM_DESC(temp_limits,
@ -53,9 +55,8 @@ static void gpd_pocket_fan_worker(struct work_struct *work)
if (thermal_zone_get_temp(fan->dts0, &t0) ||
thermal_zone_get_temp(fan->dts1, &t1)) {
dev_warn(fan->dev, "Error getting temperature\n");
queue_delayed_work(system_wq, &fan->work,
msecs_to_jiffies(1000));
return;
speed = MAX_SPEED;
goto set_speed;
}
temp = max(t0, t1);
@ -79,8 +80,9 @@ static void gpd_pocket_fan_worker(struct work_struct *work)
speed = i;
if (fan->last_speed <= 0 && speed)
speed = 3; /* kick start motor */
speed = MAX_SPEED; /* kick start motor */
set_speed:
gpd_pocket_fan_set_speed(fan, speed);
/* When mostly idle (low temp/speed), slow down the poll interval. */