[PATCH] net: stmmac: Fix possible division by zero
flat view
STALE1774d
From: Ameer Hamza <hidden>
Date: 2021-12-02 22:37:50
Also in:
lkml
Subsystem:
networking drivers, stmmac ethernet driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Maxime Chevallier, Linus Torvalds
Fix for divide by zero error reported by Coverity.
Addresses-Coverity: 1494557 ("Division or modulo by zero")
Signed-off-by: Ameer Hamza <redacted>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index da8306f60730..f44400323407 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c@@ -863,7 +863,7 @@ int stmmac_init_tstamp_counter(struct stmmac_priv *priv, u32 systime_flags) stmmac_config_sub_second_increment(priv, priv->ptpaddr, priv->plat->clk_ptp_rate, xmac, &sec_inc); - temp = div_u64(1000000000ULL, sec_inc); + temp = div_u64(1000000000ULL, (sec_inc > 0) ? sec_inc : 1); /* Store sub second increment for later use */ priv->sub_second_inc = sec_inc;
--
2.25.1