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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-10-03 20:09:22 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-10-03 20:09:22 +0200 |
| commit | 4aa497ca10a003153dd4b7af5f33d5f71a8f30d8 (patch) | |
| tree | d51ab55c756fa6ad478d15014e9859311d1b9641 /drivers/acpi/utils.c | |
| parent | a7ece531b940199d2f4a5fae310d8088309ed2cf (diff) | |
| parent | 7fc90e8617095742ec0d948bfee10231c7a09be5 (diff) | |
| download | linux-4aa497ca10a003153dd4b7af5f33d5f71a8f30d8.tar.gz | |
Merge branch 'acpi-uid'
Merge ACPI _UID handling unification changes for 6.1-rc1:
- Introduce acpi_dev_uid_to_integer() to convert a _UID string into an
integer value (Andy Shevchenko).
- Use acpi_dev_uid_to_integer() in several places to unify _UID
handling (Andy Shevchenko).
* acpi-uid:
efi/dev-path-parser: Refactor _UID handling to use acpi_dev_uid_to_integer()
spi: pxa2xx: Refactor _UID handling to use acpi_dev_uid_to_integer()
perf: qcom_l2_pmu: Refactor _UID handling to use acpi_dev_uid_to_integer()
i2c: mlxbf: Refactor _UID handling to use acpi_dev_uid_to_integer()
i2c: amd-mp2-plat: Refactor _UID handling to use acpi_dev_uid_to_integer()
ACPI: x86: Refactor _UID handling to use acpi_dev_uid_to_integer()
ACPI: LPSS: Refactor _UID handling to use acpi_dev_uid_to_integer()
ACPI: utils: Add acpi_dev_uid_to_integer() helper to get _UID as integer
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. * |