kern/51756: wd_trim() fails

[martin%NetBSD.org@localhost]

>Number:         51756
>Category:       kern
>Synopsis:       wd_trim() fails
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Dec 31 11:25:00 +0000 2016
>Originator:     Martin Husemann
>Release:        NetBSD 7.99.53
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD whoever-brings-the-night.aprisoft.de 7.99.53 NetBSD 7.99.53 (WHOEVER) #69: Wed Dec 28 20:52:33 CET 2016 martin%martins.aprisoft.de@localhost:/ssd/src/sys/arch/sparc64/compile/WHOEVER sparc64
Architecture: sparc64
Machine: sparc64
>Description:

Mounting a SSD device connected to a siisata(4) controller on sparc64 with
option "discard" causes failures from wd_trim:

wd0: wd_trim: status=0xaa<ERROR>
siisata0: fatal error 5 on channel 3 (ctx 0x400c361b), resetting

I have tested different SSD drives and they all behave the same.
All wd_trim() calls fail.

>How-To-Repeat:
s/a

>Fix:
n/a