net: stmmac: Prevent divide-by-zero (6fa9d691) · Commits · 戴 / test

When RX Coalesce settings are set to all zero (which is a valid setting) we will currently get a divide-by-zero error. Fix it. Signed-off-by:

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -3418,7 +3418,9 @@ static inline void stmmac_rx_refill(struct stmmac_priv *priv, u32 queue)
		stmmac_refill_desc3(priv, rx_q, p);

		rx_q->rx_count_frames++;
		rx_q->rx_count_frames %= priv->rx_coal_frames;
		rx_q->rx_count_frames += priv->rx_coal_frames;
		if (rx_q->rx_count_frames > priv->rx_coal_frames)
		rx_q->rx_count_frames = 0;
		use_rx_wd = priv->use_riwt && rx_q->rx_count_frames;

		dma_wmb();