Re: [PATCH v2 08/35] brcmfmac: of: Fetch Apple properties

[Hector Martin]

On 2022/01/04 20:17, Andy Shevchenko wrote:
> On Tue, Jan 4, 2022 at 9:28 AM Hector Martin <marcan@xxxxxxxxx> wrote:
>>
>> On Apple ARM64 platforms, firmware selection requires two properties
>> that come from system firmware: the module-instance (aka "island", a
>> codename representing a given hardware platform) and the antenna-sku.
>> We map Apple's module codenames to board_types in the form
>> "apple,<module-instance>".
>>
>> The mapped board_type is added to the DTS file in that form, while the
>> antenna-sku is forwarded by our bootloader from the Apple Device Tree
>> into the FDT. Grab them from the DT so firmware selection can use
>> them.
> 
>> +       /* Apple ARM64 platforms have their own idea of board type, passed in
>> +        * via the device tree. They also have an antenna SKU parameter
>> +        */
>> +       if (!of_property_read_string(np, "brcm,board-type", &prop))
>> +               settings->board_type = devm_kstrdup(dev, prop, GFP_KERNEL);
>> +
>> +       if (!of_property_read_string(np, "apple,antenna-sku", &prop))
>> +               settings->antenna_sku = devm_kstrdup(dev, prop, GFP_KERNEL);
> 
> No error checks?
> But hold on, why do you need to copy them? Are you expecting this to be in DTO?

Yeah, I was wondering about that... indeed it shouldn't be necessary to
copy them.

-- 
Hector Martin (marcan@xxxxxxxxx)
Public Key: https://mrcn.st/pub