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Subject[PATCH v3 2/4] ACPI: bus: Introduce acpi_match_acpi_device() helper
Date
In some cases we can't have a physical node associated with
the ACPI device. Yet we want to match it against ID table and
get respective driver data. Introduce the helper for that.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/acpi/bus.c | 15 +++++++++++----
include/linux/acpi.h | 9 +++++++++
2 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 20cdfb37da79..ee88bfb60ac2 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -850,6 +850,16 @@ static bool __acpi_match_device(const struct acpi_device *device,
return true;
}

+const struct acpi_device_id *acpi_match_acpi_device(const struct acpi_device_id *ids,
+ const struct acpi_device *adev)
+{
+ const struct acpi_device_id *id = NULL;
+
+ __acpi_match_device(adev, ids, NULL, &id, NULL);
+ return id;
+}
+EXPORT_SYMBOL_GPL(acpi_match_acpi_device);
+
/**
* acpi_match_device - Match a struct device against a given list of ACPI IDs
* @ids: Array of struct acpi_device_id object to match against.
@@ -864,10 +874,7 @@ static bool __acpi_match_device(const struct acpi_device *device,
const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids,
const struct device *dev)
{
- const struct acpi_device_id *id = NULL;
-
- __acpi_match_device(acpi_companion_match(dev), ids, NULL, &id, NULL);
- return id;
+ return acpi_match_acpi_device(ids, acpi_companion_match(dev));
}
EXPORT_SYMBOL_GPL(acpi_match_device);

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 640f1c07c894..641dc4843987 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -707,6 +707,9 @@ extern int acpi_nvs_register(__u64 start, __u64 size);
extern int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *),
void *data);

+const struct acpi_device_id *acpi_match_acpi_device(const struct acpi_device_id *ids,
+ const struct acpi_device *adev);
+
const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids,
const struct device *dev);

@@ -922,6 +925,12 @@ static inline int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *),

struct acpi_device_id;

+static inline const struct acpi_device_id *acpi_match_acpi_device(
+ const struct acpi_device_id *ids, const struct acpi_device *adev)
+{
+ return NULL;
+}
+
static inline const struct acpi_device_id *acpi_match_device(
const struct acpi_device_id *ids, const struct device *dev)
{
--
2.40.0.1.gaa8946217a0b
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