[802.11] Set channels early on to avoid tuning to an undefined channel

Some cards (such as ath5k) always need to tune to a particular channel when they are reset; the reset may happen upon open(), which is before the channels array would be set up (in prepare_probe()). Avoid tuning the card to an inconsistent state by copying the hardware supported-channels array to the 802.11 device's allowable-channels array even before channels are "properly" set up. Signed-off-by: Michael Brown <mcb30@etherboot.org>
ipxe · Aug 8, 2009 · 1e810be · 1e810be
1 parent f128a6d
commit 1e810be
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/net/80211/net80211.c b/src/net/80211/net80211.c
@@ -794,6 +794,11 @@ int net80211_register ( struct net80211_device *dev,
 	memcpy ( dev->hw, hw, sizeof ( *hw ) );
 	memcpy ( dev->netdev->ll_addr, hw->hwaddr, ETH_ALEN );
 
+	/* Set some sensible channel defaults for driver's open() function */
+	memcpy ( dev->channels, dev->hw->channels,
+		 NET80211_MAX_CHANNELS * sizeof ( dev->channels[0] ) );
+	dev->channel = 0;
+
 	list_add_tail ( &dev->list, &net80211_devices );
 	return register_netdev ( dev->netdev );
 }