Commit 6fa9d691 authored by Jose Abreu's avatar Jose Abreu Committed by David S. Miller

net: stmmac: Prevent divide-by-zero

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: default avatarJose Abreu <joabreu@synopsys.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e7f13f44
...@@ -3418,7 +3418,9 @@ static inline void stmmac_rx_refill(struct stmmac_priv *priv, u32 queue) ...@@ -3418,7 +3418,9 @@ static inline void stmmac_rx_refill(struct stmmac_priv *priv, u32 queue)
stmmac_refill_desc3(priv, rx_q, p); stmmac_refill_desc3(priv, rx_q, p);
rx_q->rx_count_frames++; 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; use_rx_wd = priv->use_riwt && rx_q->rx_count_frames;
dma_wmb(); dma_wmb();
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment