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From: Kartik Rajput <kkartik@nvidia.com>
To: <lenb@kernel.org>, <sakari.ailus@linux.intel.com>,
	<mika.westerberg@linux.intel.com>,
	<andriy.shevchenko@linux.intel.com>, <thierry.reding@gmail.com>,
	<jonathanh@nvidia.com>, <linux-acpi@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>
Cc: Kartik Rajput <kkartik@nvidia.com>, <stable@vger.kernel.org>
Subject: [PATCH v2] ACPI: bus: Use OF match data for PRP0001 matched devices
Date: Wed, 7 Jan 2026 17:33:18 +0530	[thread overview]
Message-ID: <20260107120318.13130-1-kkartik@nvidia.com> (raw)

When a device is matched via PRP0001, the driver's OF (DT) match table
must be used to obtain the device match data. If a driver provides both
an acpi_match_table and an of_match_table, the current
acpi_device_get_match_data() path consults the driver's acpi_match_table
and returns NULL (no ACPI ID matches).

Explicitly detect PRP0001 and fetch match data from the driver's
of_match_table via acpi_of_device_get_match_data().

Fixes: 886ca88be6b3 ("ACPI / bus: Respect PRP0001 when retrieving device match data")
Cc: stable@vger.kernel.org
Signed-off-by: Kartik Rajput <kkartik@nvidia.com>
---
Changes in v2:
	* Fix build errors.
---
 drivers/acpi/bus.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 5e110badac7b..6658c4339656 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -1031,8 +1031,9 @@ const void *acpi_device_get_match_data(const struct device *dev)
 {
 	const struct acpi_device_id *acpi_ids = dev->driver->acpi_match_table;
 	const struct acpi_device_id *match;
+	struct acpi_device *adev = ACPI_COMPANION(dev);
 
-	if (!acpi_ids)
+	if (!strcmp(ACPI_DT_NAMESPACE_HID, acpi_device_hid(adev)))
 		return acpi_of_device_get_match_data(dev);
 
 	match = acpi_match_device(acpi_ids, dev);
-- 
2.43.0


             reply	other threads:[~2026-01-07 12:03 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-01-07 12:03 Kartik Rajput [this message]
2026-01-07 12:38 ` [PATCH v2] ACPI: bus: Use OF match data for PRP0001 matched devices Sakari Ailus
2026-01-08 11:18   ` Kartik Rajput
2026-01-07 12:54 ` Rafael J. Wysocki
2026-01-08 11:23   ` Kartik Rajput
2026-01-07 15:47 ` Andy Shevchenko
2026-01-08 12:27   ` Kartik Rajput
2026-01-08 18:05     ` Andy Shevchenko

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