madwifi: fix division by zero

[openwrt/svn-archive/archive.git] / package / madwifi / patches / 389-autochannel.patch

diff --git a/package/madwifi/patches/389-autochannel.patch b/package/madwifi/patches/389-autochannel.patch
index 9c77b0e543e52287a42375cc8503f0bb97960a7f..7926d2e58d0a8a1d155232519476379fb285a935 100644 (file)
--- a/package/madwifi/patches/389-autochannel.patch
+++ b/package/madwifi/patches/389-autochannel.patch
@@ -16,7 +16,7 @@
        sc->sc_curchan.channel = ic->ic_curchan->ic_freq;
        sc->sc_curchan.channelFlags = ath_chan2flags(ic->ic_curchan);
        if (!ath_hal_reset(ah, sc->sc_opmode, &sc->sc_curchan, AH_FALSE, &status)) {
-@@ -2913,6 +2915,37 @@ ath_hw_check_atim(struct ath_softc *sc, 
+@@ -2913,6 +2915,40 @@ ath_hw_check_atim(struct ath_softc *sc, 
  }
  
  
@@ -38,6 +38,9 @@
 +
 +      rx = OS_REG_READ(ah, AR5K_RXCLEAR);
 +      cc = OS_REG_READ(ah, AR5K_CYCLES);
++      if (!cc)
++              return;
++
 +      if (rx > cc)
 +              return; /* wraparound */
 +
@@ -54,7 +57,7 @@
  /*
   * Reset the hardware w/o losing operational state.  This is
   * basically a more efficient way of doing ath_stop, ath_init,
-@@ -2939,6 +2972,7 @@ ath_reset(struct net_device *dev)
+@@ -2939,6 +2975,7 @@ ath_reset(struct net_device *dev)
         * Convert to a HAL channel description with the flags
         * constrained to reflect the current operating mode.
         */
@@ -62,7 +65,7 @@
        c = ic->ic_curchan;
        sc->sc_curchan.channel = c->ic_freq;
        sc->sc_curchan.channelFlags = ath_chan2flags(c);
-@@ -9019,6 +9053,7 @@ ath_chan_set(struct ath_softc *sc, struc
+@@ -9019,6 +9056,7 @@ ath_chan_set(struct ath_softc *sc, struc
        u_int8_t channel_change_required = 0;
        struct timeval tv;