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2650484461
c_can_chip_config() was programming C_CAN_CTRL_REG without CONTROL_INIT,
which may allow the controller to become active before
c_can_set_bittiming() finishes.
That creates a short timing window where the peripheral can interact with
the bus using a different/default bitrate, potentially generating bus
errors and corrupting traffic.
Set CONTROL_INIT together with the control-mode writes in
c_can_chip_config() (normal, loopback and listen-only paths), so the
controller stays halted until bit timing is fully programmed.
This prevents transient bus disturbance during startup when the configured
bitrate differs from the active bus bitrate.
Signed-off-by: Lucas Martins Alves <lucas.alves@lumal21.com.br>
Link: https://patch.msgid.link/20260714164839.771123-1-lucas.alves@lumal21.com.br
Fixes:
|
||
|---|---|---|
| .. | ||
| c_can_ethtool.c | ||
| c_can_main.c | ||
| c_can_pci.c | ||
| c_can_platform.c | ||
| c_can.h | ||
| Kconfig | ||
| Makefile | ||