linux/drivers/hwmon/occ
Alexander Soldatov 8083034251 hwmon: (occ) Add temp sensor value check
The occ driver supports two formats for the temp sensor value.

The OCC firmware for P8 supports only the first format, for which
no range checking or error processing is performed in the driver.
Inspecting the OCC sources for P8 reveals that OCC may send
a special value 0xFFFF to indicate that a sensor read timeout
has occurred, see

https://github.com/open-power/occ/blob/master_p8/src/occ/cmdh/cmdh_fsp_cmds.c#L395

That situation wasn't handled in the driver. This patch adds invalid
temp value check for the sensor data format 1 and handles it the same
way as it is done for the format 2, where EREMOTEIO is reported for
this case.

Signed-off-by: Alexander Soldatov <a.soldatov@yadro.com>
Signed-off-by: Alexander Amelkin <a.amelkin@yadro.com>
Reviewed-by: Alexander Amelkin <a.amelkin@yadro.com>
Cc: Edward A. James <eajames@us.ibm.com>
Cc: Joel Stanley <joel@jms.id.au>
Reviewed-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
..
common.c hwmon: (occ) Add temp sensor value check 2019-06-23 18:33:01 -07:00
common.h hwmon: (occ) Store error condition for rate-limited polls 2019-04-16 15:12:13 -07:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
p8_i2c.c hwmon: (occ) Fix license headers 2019-02-18 14:23:29 -08:00
p9_sbe.c hwmon: (occ) Fix license headers 2019-02-18 14:23:29 -08:00
sysfs.c hwmon: (occ) Prevent sysfs error attribute from returning error 2019-04-16 15:13:54 -07:00