ath9k_hw: min_t() casts u32 to int

The code here treats very large values of "limit" as less than
MAX_POWER_RATE because of the cast to int.  We should do the compare
as u32 instead.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index f16d2033081f3ea8df6b30a8ee74258772a2d500..e1dc084eac5bbb567372db35aa716ca62180e5a3 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -2579,7 +2579,7 @@ void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)
        struct ath9k_channel *chan = ah->curchan;
        struct ieee80211_channel *channel = chan->chan;
 
-       reg->power_limit = min_t(int, limit, MAX_RATE_POWER);
+       reg->power_limit = min_t(u32, limit, MAX_RATE_POWER);
        if (test)
                channel->max_power = MAX_RATE_POWER / 2;