On Wed, Sep 2, 2020 at 4:08 PM Hans de Goede <[email protected]> wrote:
>
> Hi All,
>
> 5.8 introduces a new CONFIG_USB_XHCI_PCI_RENESAS Kconfig symbol.
>
> The current Fedora kernel config says this to 'm'. I assume that
> this was done because the help-text suggests that doing so will
> make support for some special XHCI controllers which need to
> be "booted" (have firmware loaded) by the kernel modular, while
> keeping the generic xhci-pci code builtin so that we start probing
> XHCI USB busses ASAP during boot.
>
> But, and this is somewhat of a surprise, the xhci-pci-renesas
> code does not use the xhci-pci code as a library on top of
> which it builds. Instead it offers some hooks for the xhci-pci
> code to call in and having CONFIG_USB_XHCI_PCI_RENESAS set will
> thus make xhci-pci.ko depend on xhci-pci-renesas.ko.
>
> Which means that if xhci-pci-renesas.ko is not builtin, this
> also forces xhci-pci.ko to not be builtin.
>
> As said I assume that this xhci-pci.ko no longer being builtin
> is not intentional, so that the right way to fix this would
> be to set CONFIG_USB_XHCI_PCI_RENESAS=y, right ?

We don't need to enable CONFIG_USB_XHCI_PCI_RENESAS because we don't
enable ARCH_RENESAS, if that controller has some weirdisms upstream
likely should have made it something like "default y if ARCH_RENESAS"
or similar.

> This problem is leading to some people not being able to
> enter their disk passwords, see:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=1874300
>
> Regards,
>
> Hans
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