Hi Guenter,
We're having a problem with overflowing signed 32 bit integers for
reading some hwmon attributes:
struct hwmon_ops { umode_t (*is_visible)(const void *drvdata, enum
hwmon_sensor_types type, u32 attr, int channel); int (*read)(struct
device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long
*val); int (*read_string)(struct device *dev, enum hwmon_sensor_types
type, u32 attr, int channel, const char **str); int (*write)(struct
device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long
val); };
Specifically, power values in micro-watts (about 2200 watts will
overflow the value - imagine multiple processors and a number of
GPUs...). What do you suggest in this case?
This is relevant for our OCC driver; thanks for the comments btw. In our
OCC driver, we have custom sysfs entries for power, and so can return a
string with "%llx" to deal with this. But of course, the user space
client, based on the hwmon API, can't handle it.
Appreciate any suggestions.
Thanks,
Eddie
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