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

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

The following reply was made to PR kern/57063; it has been noted by GNATS.

From: Paul Goyette <paul%whooppee.com@localhost>
To: Brad Spencer <brad%anduin.eldar.org@localhost>
Cc: gnats-bugs%netbsd.org@localhost, kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, 
    netbsd-bugs%netbsd.org@localhost
Subject: Re: kern/57063: Kernel panic in -current in iic_attach
Date: Tue, 18 Oct 2022 07:26:37 -0700 (PDT)

 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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