Re: kern/57063: Kernel panic in -current in iic_attach

[Paul Goyette <paul%whooppee.com@localhost>]

On Tue, 18 Oct 2022, Brad Spencer wrote:

<big snip>

> o If you comment out the type check in dwiic_init and and try to use the
> device I have anyway you do not appear to get a panic anywhere, but the
> driver reports fails in other ways indicating that the device I have
> really won't work with the driver:
>
> [     1.000003] dwiic0 at pci0 dev 21 function 0: I2C controller instance 0
> [     1.000003] dwiic0: interrupting at ioapic0 pin 16
> [     1.000003] dwiic0: failed to disable
> [     1.000003] dwiic0: failed to disable
> [     1.000003] iic0 at dwiic0: I2C bus
> [     1.000003] dwiic1 at pci0 dev 21 function 1autoconfiguration error: : can't map register space

Sounds to me like maybe the dwiic driver should make this ``type
check'' during dwiic_match() and fail there.


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