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i8k: Register only temperature sensors which have labels

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Detect presense of sensor by calling type function instead trying to read
temperature value. Type function is working also for sensors which are temporary
turned off (e.g on GPU which is turned off). Dell DOS binary NBSVC.MDM is doing
similar checks, so we should do that too.

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Pali Rohár 2015-01-12 14:31:58 +01:00 committed by Greg Kroah-Hartman
parent 5114b474cb
commit 672af22330
1 changed files with 9 additions and 9 deletions
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18
drivers/char/i8k.c
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@ -660,19 +660,19 @@ static int __init i8k_init_hwmon(void)
i8k_hwmon_flags = 0;
/* CPU temperature attributes, if temperature reading is OK */
err = i8k_get_temp(0);
if (err >= 0 || err == -ERANGE)
/* CPU temperature attributes, if temperature type is OK */
err = i8k_get_temp_type(0);
if (err >= 0)
i8k_hwmon_flags |= I8K_HWMON_HAVE_TEMP1;
/* check for additional temperature sensors */
err = i8k_get_temp(1);
if (err >= 0 || err == -ERANGE)
err = i8k_get_temp_type(1);
if (err >= 0)
i8k_hwmon_flags |= I8K_HWMON_HAVE_TEMP2;
err = i8k_get_temp(2);
if (err >= 0 || err == -ERANGE)
err = i8k_get_temp_type(2);
if (err >= 0)
i8k_hwmon_flags |= I8K_HWMON_HAVE_TEMP3;
err = i8k_get_temp(3);
if (err >= 0 || err == -ERANGE)
err = i8k_get_temp_type(3);
if (err >= 0)
i8k_hwmon_flags |= I8K_HWMON_HAVE_TEMP4;
/* Left fan attributes, if left fan is present */