On 07.10.2024 10:23:58, Matthias Schiffer wrote:
> While an m_can controller usually already has the init flag from a
> hardware reset, no such reset happens on the integrated m_can_pci of the
> Intel Elkhart Lake. If the CAN controller is found in an active state,
> m_can_dev_setup() would fail because m_can_niso_supported() calls
> m_can_cccr_update_bits(), which refuses to modify any other configuration
> bits when CCCR_INIT is not set.
>
> To avoid this issue, set CCCR_INIT before attempting to modify any other
> configuration flags.
>
> Fixes: cd5a46ce6fa6 ("can: m_can: don't enable transceiver when probing")
> Signed-off-by: Matthias Schiffer <matthias.schiffer@xxxxxxxxxxxxxxx>
> Reviewed-by: Markus Schneider-Pargmann <msp@xxxxxxxxxxxx>
Applied to linux-can.
regards,
Marc
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