can: kvaser_usb_leaf: Fix improved state not being reported

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[ Upstream commit 8d21f5927a ]

The tested 0bfd:0017 Kvaser Memorator Professional HS/HS FW 2.0.50 and
0bfd:0124 Kvaser Mini PCI Express 2xHS FW 4.18.778 do not seem to send
any unsolicited events when error counters decrease or when the device
transitions from ERROR_PASSIVE to ERROR_ACTIVE (or WARNING).

This causes the interface to e.g. indefinitely stay in the ERROR_PASSIVE
state.

Fix that by asking for chip state (inc. counters) event every 0.5 secs
when error counters are non-zero.

Since there are non-error-counter devices, also always poll in
ERROR_PASSIVE even if the counters show zero.

Fixes: 080f40a6fa ("can: kvaser_usb: Add support for Kvaser CAN/USB devices")
Tested-by: Jimmy Assarsson <extja@kvaser.com>
Signed-off-by: Anssi Hannula <anssi.hannula@bitwise.fi>
Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Link: https://lore.kernel.org/all/20221010185237.319219-7-extja@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Anssi Hannula 2022-10-10 20:52:32 +02:00 • committed by Greg Kroah-Hartman

parent 6354011aa5

commit 1eef65b79f

3 changed files with 81 additions and 3 deletions

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7

drivers/net/can/usb/kvaser_usb/kvaser_usb.h

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19

drivers/net/can/usb/kvaser_usb/kvaser_usb_core.c

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58

drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c

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