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drivers: can: nxp: flexcan: bus errors when transmitting leads to log flooding #110654

Description

@henrikbrixandersen

Describe the bug

After commit e4268b9 (PR #101551), enqueuing a CAN frame for transmit while no other node is present on the bus (leading the TX error count to increase until eventually entering error-passive) can cause a flood of log warnings to occur.

Regression

  • This is a regression.

Steps to reproduce

  • west build -b twr_ke18f/mke18f16 samples/drivers/can/counter/ -- -DCONFIG_LOOPBACK_MODE=n
  • west flash

Relevant log output

[00:00:44.977,000] <wrn> can_mcux_flexcan: Unhandled status 0x000014c1 (result = 0x00000000000000ff)

Impact

Major – Severely degrades functionality; workaround is difficult or unavailable.

Environment

Zephyr Commit SHA: b31f02f

Additional Context

No response

Activity

  1. added a commit that references this issue on Jun 8, 2026
    7e3d975
  2. added a commit that references this issue on Jun 15, 2026
    d0c1e01
  3. added a commit that references this issue on Aug 24, 2026
    d310307
  4. added a commit that references this issue on Sep 15, 2026
    de61bed
  5. added a commit that references this issue on Sep 17, 2026
    9a6386a
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RegressionSomething, which was working, does not anymorearea: CANController Area Networkplatform: NXPNXPpriority: lowLow impact/importance bug

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