During testing I noticed a crash if unloading/loading the gs_usb
driver during high CAN bus load.
The current version of the candlelight firmware doesn't flush the
queues of the received CAN frames during the reset command. This leads
to a crash if hardware timestamps are enabled, it a URB from the
device is received before the cycle counter/time counter
infrastructure has been setup.
First clean up then error handling in gs_can_open().
Then, fix the problem by converting the cycle counter/time counter
infrastructure from a per-channel to per-device and set it up before
submitting RX-URBs to the USB stack.
Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
---
Marc Kleine-Budde (2):
can: gs_usb: gs_can_open(): improve error handling
can: gs_usb: fix time stamp counter initialization
drivers/net/can/usb/gs_usb.c | 130 ++++++++++++++++++++++++-------------------
1 file changed, 74 insertions(+), 56 deletions(-)
---
base-commit: 0dd1805fe498e0cf64f68e451a8baff7e64494ec
change-id: 20230712-gs_usb-fix-time-stamp-counter-4bd302c808af
Best regards,
--
Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
