diff options
| -rw-r--r-- | drivers/acpi/utils.c | 24 | ||||
| -rw-r--r-- | include/acpi/acpi_bus.h | 1 | ||||
| -rw-r--r-- | include/linux/acpi.h | 5 |
3 files changed, 30 insertions, 0 deletions
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index 5a7b8065e77f..febf9b8da3a0 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. * diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index e7d27373ff71..bd0db916f330 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -733,6 +733,7 @@ static inline bool acpi_device_can_poweroff(struct acpi_device *adev) } bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2); +int acpi_dev_uid_to_integer(struct acpi_device *adev, u64 *integer); void acpi_dev_clear_dependencies(struct acpi_device *supplier); bool acpi_dev_ready_for_enumeration(const struct acpi_device *device); diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 6f64b2f3dc54..9434db02cb60 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -798,6 +798,11 @@ acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *u return false; } +static inline int acpi_dev_uid_to_integer(struct acpi_device *adev, u64 *integer) +{ + return -ENODEV; +} + static inline struct acpi_device * acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv) { |