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net: stmmac_tc: use 64-bit arithmetic instead of 32-bit
Add suffix UL to constant 1024 in order to give the compiler complete information about the proper arithmetic to use. Notice that this constant is used in a context that expects an expression of type u64 (64 bits, unsigned) and following expressions are currently being evaluated using 32-bit arithmetic: qopt->idleslope * 1024 * ptr qopt->hicredit * 1024 * 8 qopt->locredit * 1024 * 8 Addresses-Coverity-ID: 1470246 ("Unintentional integer overflow") Addresses-Coverity-ID: 1470248 ("Unintentional integer overflow") Addresses-Coverity-ID: 1470249 ("Unintentional integer overflow") Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Acked-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -321,7 +321,7 @@ static int tc_setup_cbs(struct stmmac_priv *priv,
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speed_div = (priv->speed == SPEED_100) ? 100000 : 1000000;
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/* Final adjustments for HW */
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value = qopt->idleslope * 1024 * ptr;
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value = qopt->idleslope * 1024UL * ptr;
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do_div(value, speed_div);
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priv->plat->tx_queues_cfg[queue].idle_slope = value & GENMASK(31, 0);
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@ -329,10 +329,10 @@ static int tc_setup_cbs(struct stmmac_priv *priv,
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do_div(value, speed_div);
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priv->plat->tx_queues_cfg[queue].send_slope = value & GENMASK(31, 0);
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value = qopt->hicredit * 1024 * 8;
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value = qopt->hicredit * 1024UL * 8;
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priv->plat->tx_queues_cfg[queue].high_credit = value & GENMASK(31, 0);
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value = qopt->locredit * 1024 * 8;
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value = qopt->locredit * 1024UL * 8;
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priv->plat->tx_queues_cfg[queue].low_credit = value & GENMASK(31, 0);
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ret = stmmac_config_cbs(priv, priv->hw,
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