linux-kernel - Re: [PATCH 3/3] platform/surface: Add OF support

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Message-ID: <f0ead060-f1ef-4e7c-b402-28de69589628@gmail.com>
Date: Sat, 10 Aug 2024 01:09:33 +0200
From: Konrad Dybcio <konradybcio@...il.com>
To: Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Jiri Slaby <jirislaby@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, "Rafael J. Wysocki" <rafael@...nel.org>,
 Len Brown <lenb@...nel.org>, Maximilian Luz <luzmaximilian@...il.com>,
 Hans de Goede <hdegoede@...hat.com>,
 Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Cc: Marijn Suijten <marijn.suijten@...ainline.org>,
 linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
 devicetree@...r.kernel.org, linux-acpi@...r.kernel.org,
 platform-driver-x86@...r.kernel.org, Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <quic_kdybcio@...cinc.com>
Subject: Re: [PATCH 3/3] platform/surface: Add OF support

On 9.08.2024 3:48 AM, Konrad Dybcio wrote:
> From: Konrad Dybcio <quic_kdybcio@...cinc.com>
> 
> Add basic support for registering the aggregator module on Device Tree-
> based platforms. These include at least three generations of Qualcomm
> Snapdragon-based Surface devices:
> 
> - SC8180X / SQ1 / SQ2: Pro X,
> - SC8280XP / SQ3: Devkit 2023, Pro 9
> - X Elite: Laptop 7 / Pro11
> 
> Thankfully, the aggregators on these seem to be configured in an
> identical way, which allows for using these settings as defaults and
> no DT properties need to be introduced (until that changes, anyway).
> 
> Based on the work done by Maximilian Luz, largely rewritten.
> 
> Signed-off-by: Konrad Dybcio <quic_kdybcio@...cinc.com>
> ---

[...]

> --- a/drivers/acpi/scan.c
> +++ b/drivers/acpi/scan.c
> @@ -2444,7 +2444,8 @@ static int acpi_walk_dep_device_list(acpi_handle handle,
>   */
>  void acpi_dev_clear_dependencies(struct acpi_device *supplier)
>  {
> -	acpi_walk_dep_device_list(supplier->handle, acpi_scan_clear_dep, NULL);
> +	if (supplier)
> +		acpi_walk_dep_device_list(supplier->handle, acpi_scan_clear_dep, NULL);
>  }
>  EXPORT_SYMBOL_GPL(acpi_dev_clear_dependencies);

Err this shouldn't have made it into this patch

Konrad