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net: airoha: Set REG_RX_CPU_IDX() once in airoha_qdma_fill_rx_queue()

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It is not necessary to update REG_RX_CPU_IDX register for each iteration
of the descriptor loop in airoha_qdma_fill_rx_queue routine.
Move REG_RX_CPU_IDX configuration out of the descriptor loop and rely on
the last queue head value updated in the descriptor loop.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260331-airoha-cpu-idx-out-off-loop-v1-1-75c66b428f50@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Lorenzo Bianconi
2026-03-31 12:33:24 +02:00
committed by Paolo Abeni
parent f1fa1157f4
commit 269389ba53
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ethernet/airoha/airoha_eth.c
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@@ -572,11 +572,12 @@ static int airoha_qdma_fill_rx_queue(struct airoha_queue *q)
WRITE_ONCE(desc->msg1, 0);
WRITE_ONCE(desc->msg2, 0);
WRITE_ONCE(desc->msg3, 0);
}
if (nframes)
airoha_qdma_rmw(qdma, REG_RX_CPU_IDX(qid),
RX_RING_CPU_IDX_MASK,
FIELD_PREP(RX_RING_CPU_IDX_MASK, q->head));
}
return nframes;
}