On 7/6/2026 5:05 PM, Sebastian Andrzej Siewior wrote:

On 2026-07-06 16:02:15 [+0200], Christian Taedcke via B4 Relay wrote:

quoted

From: Christian Taedcke <redacted>

macb_interrupt() defers TX completion handling to NAPI, but when it
schedules the poll it only masks TCOMP, even though TXUBR is enabled
alongside it (both are part of MACB_TX_INT_FLAGS). macb_tx_poll() is
asymmetric in the same way and only re-enables TCOMP. TXUBR is thus
left unmasked while responsibility for handling it has been deferred
to NAPI.

So this is not a race condition, this is always a failure?

As far as in understand it: yes

Sebastian

Christian