linux-kernel - Re: [PATCH] ACPI: bus: Use OF match data for PRP0001 matched devices

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <f659b13d-cc51-42be-a441-d1fcf3909837@nvidia.com>
Date: Wed, 7 Jan 2026 17:33:26 +0530
From: Kartik Rajput <kkartik@...dia.com>
To: Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc: lenb@...nel.org, mika.westerberg@...ux.intel.com,
 andriy.shevchenko@...ux.intel.com, thierry.reding@...il.com,
 jonathanh@...dia.com, linux-acpi@...r.kernel.org,
 linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH] ACPI: bus: Use OF match data for PRP0001 matched devices

On 07/01/26 17:12, Sakari Ailus wrote:
> External email: Use caution opening links or attachments
> 
> 
> Hi Kartik,
> 
> On Wed, Jan 07, 2026 at 11:54:52AM +0530, Kartik Rajput wrote:
>> 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@...r.kernel.org
>> Signed-off-by: Kartik Rajput <kkartik@...dia.com>
>> ---
>>   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..4cd425fffa97 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 = ACPI_COMPANION(dev);
> 
> Oops!
> 

Apologies for this. Should've been "struct acpi_device *adev = ACPI_COMPANION(dev);"

I have posted the updated patch for review.

Thanks,
Kartik