Dan Carpenter 3a318426e0 ath9k_htc: check for underflow in ath9k_htc_rx_msg()
We check for overflow here, but we don't check for underflow so it
causes a static checker warning.

Fixes: fb9987d0f748 ('ath9k_htc: Support for AR9271 chipset.')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-26 14:05:17 +02:00
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