net: stmmac: selftest: avoid large stack usage

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Putting a struct stmmac_rss object on the stack is a bad idea,
as it exceeds the warning limit for a stack frame on 32-bit architectures:

drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:1221:12: error: stack frame size of 1208 bytes in function '__stmmac_test_l3filt' [-Werror,-Wframe-larger-than=]
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:1338:12: error: stack frame size of 1208 bytes in function '__stmmac_test_l4filt' [-Werror,-Wframe-larger-than=]

As the object is the trivial empty case, change the called function
to accept a NULL pointer to mean the same thing and remove the
large variable in the two callers.

Fixes: 4647e02119 ("net: stmmac: selftests: Add selftest for L3/L4 Filters")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>

...

This commit is contained in:

Arnd Bergmann 2019-09-19 14:33:43 +02:00 • committed by Jakub Kicinski

parent a8d570de0c

commit b6b6cc9acd

2 changed files with 6 additions and 13 deletions

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5

drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c

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14

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

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