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ath9k: add compile time checking for the size of the channel list

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This prevents random memory corruption if the number of channels ever gets
changed without an update to the internal channel array size.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau
2010-10-09 02:39:30 +02:00
committed by John W. Linville
parent 8610c29a2c
commit cac4220b2e
2 changed files with 7 additions and 1 deletions
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4
drivers/net/wireless/ath/ath9k/init.c
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@@ -481,6 +481,10 @@ static int ath9k_init_channels_rates(struct ath_softc *sc)
{
void *channels;
BUILD_BUG_ON(ARRAY_SIZE(ath9k_2ghz_chantable) +
ARRAY_SIZE(ath9k_5ghz_chantable) !=
ATH9K_NUM_CHANNELS);
if (test_bit(ATH9K_MODE_11G, sc->sc_ah->caps.wireless_modes)) {
channels = kmemdup(ath9k_2ghz_chantable,
sizeof(ath9k_2ghz_chantable), GFP_KERNEL);