net: stmmac_tc: use 64-bit arithmetic instead of 32-bit

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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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Gustavo A. R. Silva 2018-07-02 07:09:32 -05:00 • committed by David S. Miller

parent 00f553660a

commit c18a9c0966

1 changed files with 3 additions and 3 deletions

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

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