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Subject: RE: [RFC PATCH net-next v5 2/9] i2c: designware: Add driver support for Wangxun 10Gb NIC
Date:   Thu, 27 Apr 2023 15:25:37 +0800
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> You can share a common data structure between the mother driver and
> her children. In that case you may access it via
> `dev_get_drvdata(pdev.dev->parent)` call.
> 

Unfortunately, the driver data already stores the private structure of the
adapter, so no more data can be stored.