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    SubjectRe: [PATCH v3 0/6] RTL8231 GPIO expander support
    Am 2021-06-01 11:59, schrieb Linus Walleij:
    > Just regarding all registers/memory cells in a register page
    > as default volatile (which is what we do a lot of the time)
    > has its upsides: bugs like this doesn't happen.

    I don't think this is the bug here. If it is really a write-only
    the problem is the read in RMW. Because reading the register will return
    the input value instead of the (previously written) output value.


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