diff options
Diffstat (limited to 'drivers/acpi/utils.c')
| -rw-r--r-- | drivers/acpi/utils.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index 4acd6f7d1395..2ea14648a661 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -794,6 +794,30 @@ bool acpi_dev_hid_uid_match(struct acpi_device *adev, EXPORT_SYMBOL(acpi_dev_hid_uid_match); /** + * acpi_dev_uid_to_integer - treat ACPI device _UID as integer + * @adev: ACPI device to get _UID from + * @integer: output buffer for integer + * + * Considers _UID as integer and converts it to @integer. + * + * Returns 0 on success, or negative error code otherwise. + */ +int acpi_dev_uid_to_integer(struct acpi_device *adev, u64 *integer) +{ + const char *uid; + + if (!adev) + return -ENODEV; + + uid = acpi_device_uid(adev); + if (!uid) + return -ENODATA; + + return kstrtou64(uid, 0, integer); +} +EXPORT_SYMBOL(acpi_dev_uid_to_integer); + +/** * acpi_dev_found - Detect presence of a given ACPI device in the namespace. * @hid: Hardware ID of the device. * |