ath5k: avoid and warn on potential infinite loop

[safe/jmp/linux-2.6] / drivers / net / wireless / ath / ath5k / phy.c

diff --git a/drivers/net/wireless/ath/ath5k/phy.c b/drivers/net/wireless/ath/ath5k/phy.c
index d0d1c35..a876ca8 100644 (file)
--- a/drivers/net/wireless/ath/ath5k/phy.c
+++ b/drivers/net/wireless/ath/ath5k/phy.c
@@ -1897,6 +1897,9 @@ ath5k_get_linear_pcdac_min(const u8 *stepL, const u8 *stepR,
        s16 min_pwrL, min_pwrR;
        s16 pwr_i;
 
+       if (WARN_ON(stepL[0] == stepL[1] || stepR[0] == stepR[1]))
+               return 0;
+
        if (pwrL[0] == pwrL[1])
                min_pwrL = pwrL[0];
        else {