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kern/53814: wm0 device timeout in netbsd 7.1

>Number:         53814
>Category:       kern
>Synopsis:       wm0 device timeout in netbsd 7.1
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Dec 26 06:50:00 +0000 2018
>Originator:     Aravind Mani
>Release:        netbsd 7.1
private organization
chip type: I354
We use WM_T_I354 chip type.When we reload continuously,we could able to observe device timeout issue. wm_init(),wm_reset() doesn't help to recover from problem state.The only way to recover is to reload the switch.There was no initialization error.
>From wm_print_stats() and wm_pkt_stats(),i don't see any value in the registers listed and the packets are not hitting the hardware.
wm_reset also didn't help to recover the issue.

Do you need any other output to investigate further?
Is there any other way to recover from this issue?.
Is there any other fix has been done around this area?.

Reload the switch continuously that runs with NetBSD 7.1.

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