get_sysfs_attr_as_uint64
Description:
Look up the sysfs attribute with name
on this and convert it to an unsigned 64-bit integer using
ascii_strtoull.
The retrieved value is cached in the device. Repeated calls will return the same value and not open the attribute again, unless updated through one of the "uncached" functions.
Parameters:
this |
A Device. |
name |
Name of the sysfs attribute. |
Returns:
The value of the sysfs attribute or 0 if there is no such attribute. |