linux-kernel - [PATCH v1 5/5] ACPI: bus: Use the matching table, if ACPI driver has it

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Date:   Thu, 25 Aug 2022 19:41:03 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>
Subject: [PATCH v1 5/5] ACPI: bus: Use the matching table, if ACPI driver has it

In case we have an ACPI driver, check its ID table for matching,
This allows to use some generic device property APIs in such
drivers.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/acpi/bus.c | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 3c0f2d050d47..17c98e826bde 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -1049,14 +1049,30 @@ static const void *acpi_of_device_get_match_data(const struct device *dev)
 	return match->data;
 }
 
+static const struct acpi_device_id *acpi_device_get_ids(const struct device *dev)
+{
+	if (dev->driver->acpi_match_table)
+		return dev->driver->acpi_match_table;
+
+	if (dev_is_acpi(dev)) {
+		struct acpi_driver *drv = to_acpi_driver(dev->driver);
+
+		if (drv->ids)
+			return drv->ids;
+	}
+
+	return NULL;
+}
+
 const void *acpi_device_get_match_data(const struct device *dev)
 {
+	const struct acpi_device_id *ids = acpi_device_get_ids(dev);
 	const struct acpi_device_id *match;
 
-	if (!dev->driver->acpi_match_table)
+	if (!ids)
 		return acpi_of_device_get_match_data(dev);
 
-	match = acpi_match_device(dev->driver->acpi_match_table, dev);
+	match = acpi_match_device(ids, dev);
 	if (!match)
 		return NULL;
 
-- 
2.35.1