According to ACPI specification, a _UID object can evaluate to either a numeric value or a string. Update acpi_dev_uid_match() helper to support _UID matching for both integer and string types. Suggested-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> Suggested-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx> Suggested-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> Signed-off-by: Raag Jadav <raag.jadav@xxxxxxxxx> --- drivers/acpi/utils.c | 19 ------------------- include/acpi/acpi_bus.h | 35 ++++++++++++++++++++++++++++++++++- include/linux/acpi.h | 8 +++----- 3 files changed, 37 insertions(+), 25 deletions(-) diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index 28c75242fca9..fe7e850c6479 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -824,25 +824,6 @@ bool acpi_check_dsm(acpi_handle handle, const guid_t *guid, u64 rev, u64 funcs) } EXPORT_SYMBOL(acpi_check_dsm); -/** - * acpi_dev_uid_match - Match device by supplied UID - * @adev: ACPI device to match. - * @uid2: Unique ID of the device. - * - * Matches UID in @adev with given @uid2. - * - * Returns: - * - %true if matches. - * - %false otherwise. - */ -bool acpi_dev_uid_match(struct acpi_device *adev, const char *uid2) -{ - const char *uid1 = acpi_device_uid(adev); - - return uid1 && uid2 && !strcmp(uid1, uid2); -} -EXPORT_SYMBOL_GPL(acpi_dev_uid_match); - /** * acpi_dev_hid_uid_match - Match device by supplied HID and UID * @adev: ACPI device to match. diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index ec6a673dcb95..bcd78939bab4 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -9,6 +9,7 @@ #ifndef __ACPI_BUS_H__ #define __ACPI_BUS_H__ +#include <linux/compiler.h> #include <linux/device.h> #include <linux/property.h> @@ -857,10 +858,42 @@ static inline bool acpi_device_can_poweroff(struct acpi_device *adev) adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set); } -bool acpi_dev_uid_match(struct acpi_device *adev, const char *uid2); 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); +static inline bool acpi_str_uid_match(struct acpi_device *adev, const char *uid2) +{ + const char *uid1 = acpi_device_uid(adev); + + return uid1 && uid2 && !strcmp(uid1, uid2); +} + +static inline bool acpi_int_uid_match(struct acpi_device *adev, u64 uid2) +{ + u64 uid1; + + return !acpi_dev_uid_to_integer(adev, &uid1) && uid1 == uid2; +} + +/** + * acpi_dev_uid_match - Match device by supplied UID + * @adev: ACPI device to match. + * @uid2: Unique ID of the device. + * + * Matches UID in @adev with given @uid2. + * + * Returns: %true if matches, %false otherwise. + */ + +/* Treat uid as a string for array and pointer types, treat as an integer otherwise */ +#define get_uid_type(x) \ + (__builtin_choose_expr(is_array_or_pointer_type(x), (const char *)0, (u64)0)) + +#define acpi_dev_uid_match(adev, uid2) \ + _Generic(get_uid_type(uid2), \ + const char *: acpi_str_uid_match, \ + u64: acpi_int_uid_match)(adev, uid2) + void acpi_dev_clear_dependencies(struct acpi_device *supplier); bool acpi_dev_ready_for_enumeration(const struct acpi_device *device); struct acpi_device *acpi_dev_get_next_consumer_dev(struct acpi_device *supplier, diff --git a/include/linux/acpi.h b/include/linux/acpi.h index b63d7811c728..aae3a459d63c 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -763,6 +763,9 @@ const char *acpi_get_subsystem_id(acpi_handle handle); #define ACPI_HANDLE(dev) (NULL) #define ACPI_HANDLE_FWNODE(fwnode) (NULL) +/* Get rid of the -Wunused-variable for adev */ +#define acpi_dev_uid_match(adev, uid2) (adev && false) + #include <acpi/acpi_numa.h> struct fwnode_handle; @@ -779,11 +782,6 @@ static inline bool acpi_dev_present(const char *hid, const char *uid, s64 hrv) struct acpi_device; -static inline bool acpi_dev_uid_match(struct acpi_device *adev, const char *uid2) -{ - return false; -} - static inline bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2) { -- 2.17.1