can: esd_usb: Allow REC and TEC to return to zero
stable inclusion from stable-v5.10.159 commit 4fd6f84e0a0c432d1acc56b7ae76e7676587081d category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I7NTXH Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4fd6f84e0a0c432d1acc56b7ae76e7676587081d -------------------------------- [ Upstream commit 918ee491 ] We don't get any further EVENT from an esd CAN USB device for changes on REC or TEC while those counters converge to 0 (with ecc == 0). So when handling the "Back to Error Active"-event force txerr = rxerr = 0, otherwise the berr-counters might stay on values like 95 forever. Also, to make life easier during the ongoing development a netdev_dbg() has been introduced to allow dumping error events send by an esd CAN USB device. Fixes: 96d8e903 ("can: Add driver for esd CAN-USB/2 device") Signed-off-by: NFrank Jungclaus <frank.jungclaus@esd.eu> Link: https://lore.kernel.org/all/20221130202242.3998219-2-frank.jungclaus@esd.eu Cc: stable@vger.kernel.org Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: NSasha Levin <sashal@kernel.org> Signed-off-by: Nsanglipeng <sanglipeng1@jd.com>
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