|   CC [M]  drivers/net/can/nct6694_canfd.o
| drivers/net/can/nct6694_canfd.c: In function ‘nct6694_canfd_start_xmit’:
| drivers/net/can/nct6694_canfd.c:282:22: error: variable ‘echo_byte’ set but not used [-Werror=unused-but-set-variable]
|   282 |         unsigned int echo_byte;
|       |                      ^~~~~~~~~
| drivers/net/can/nct6694_canfd.c: In function ‘nct6694_canfd_rx_work’:
| drivers/net/can/nct6694_canfd.c:677:34: error: variable ‘stats’ set but not used [-Werror=unused-but-set-variable]
|   677 |         struct net_device_stats *stats;
|       |                                  ^~~~~
| cc1: all warnings being treated as errors

If compiling with C=1, sparse throws the following errors:

| drivers/net/can/nct6694_canfd.c:417:14: warning: cast to restricted __le32
| drivers/net/can/nct6694_canfd.c:750:9: warning: cast to restricted __le32
| drivers/net/can/nct6694_canfd.c:777:32: warning: cast to restricted __le32

Marc

Okay! I will delete these unnecessary variables and correct the error in
the next patch.

Thanks,
Ming