linux-kernel - Re: [PATCH 00/12] can: kvaser

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Date:   Sat, 28 May 2022 09:42:06 +0200
From:   Jimmy Assarsson <extja@...ser.com>
To:     Anssi Hannula <anssi.hannula@...wise.fi>
Cc:     linux-can@...r.kernel.org, Marc Kleine-Budde <mkl@...gutronix.de>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 00/12] can: kvaser_usb: Various fixes

On 5/17/22 10:41, Jimmy Assarsson wrote:
> On 2022-05-16 15:47, Anssi Hannula wrote:
>>
>> Hi all,
>>
>> Here's a set of fixes for issues I found while testing kvaser_usb as we
>> are preparing to start using it in production (with 0bfd:0124).
> 
> Hi Anssi,
> 
> Thanks for the patches!
> I will review and test your fixes before the weekend.
> 
> Best regards,
> jimmy

Sorry for the delay!

To summarize the status.

These patches look good:
[PATCH 01/12] can: kvaser_usb_leaf: Fix overread with an invalid command
[PATCH 02/12] can: kvaser_usb: Fix use of uninitialized completion
[PATCH 03/12] can: kvaser_usb: Fix possible completions during 
init_completion
[PATCH 05/12] can: kvaser_usb_leaf: Set Warning state even without bus 
errors
[PATCH 10/12] can: kvaser_usb_leaf: Fix wrong CAN state after stopping
[PATCH 12/12] can: kvaser_usb_leaf: Fix bogus restart events

This looks good, but see comment regarding explicit queue flush:
[PATCH 06/12] can: kvaser_usb_leaf: Fix TX queue out of sync after restart

I still need some more time looking into:
PATCH 07/12] can: kvaser_usb_leaf: Fix CAN state after restart
PATCH 08/12] can: kvaser_usb_leaf: Fix improved state not being reported
PATCH 11/12] can: kvaser_usb_leaf: Ignore stale bus-off after start

I want to replace
[PATCH 04/12] can: kvaser_usb: Mark Mini PCIe 2xHS as supporting error 
counters
with a new patch
"can: kvaser_usb: kvaser_usb_leaf: Get capabilities from device"

I want to split the handling of CMD_ERROR_EVENT and the readback
functionality. I also want to add parameter readback for
kvaser_usb_hydra. I need more time to look over the can_bittiming_const
in kvaser_usb_leaf for the different supported firmware.
[PATCH 09/12] can: kvaser_usb_leaf: Fix silently failing bus params setup


I would like to create a V2 series, including my patches, if you are
okay with it?


Best regards,
jimmy



>> The biggest caveat is that I only have two devices to test with [1] and I
>> don't have HW documentation, so there is a possibility that some of the
>> fixes might not work properly on all HW variants.
>> Hopefully Jimmy can confirm they look OK, or suggest alternatives.
>>
>> [1] Tested devices:
>> - 0bfd:0017 Kvaser Memorator Professional HS/HS FW 2.0.50
>> - 0bfd:0124 Kvaser Mini PCI Express 2xHS FW 4.18.778