can: gs_usb: gs_usb_xmit_callback(): fix handling of failed transmitted URBs

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[ Upstream commit 516a0cd1c0 ]

The driver lacks the cleanup of failed transfers of URBs. This reduces the
number of available URBs per error by 1. This leads to reduced performance
and ultimately to a complete stop of the transmission.

If the sending of a bulk URB fails do proper cleanup:
- increase netdev stats
- mark the echo_sbk as free
- free the driver's context and do accounting
- wake the send queue

Closes: https://github.com/candle-usb/candleLight_fw/issues/187
Fixes: d08e973a77 ("can: gs_usb: Added support for the GS_USB CAN devices")
Link: https://patch.msgid.link/20251114-gs_usb-fix-usb-callbacks-v1-1-a29b42eacada@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Marc Kleine-Budde 2025-11-08 10:01:01 +01:00 • committed by Greg Kroah-Hartman

parent 0897cea266

commit 4a82072e45

1 changed files with 15 additions and 2 deletions

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drivers/net/can/usb/gs_usb.c

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