commit 53c5a099b8fd45632f4021f0a908b43aabe883fc
author Gabor Juhos <juhosg@openwrt.org> Mon Oct 14 21:59:52 2013 +0200
committer John W. Linville <linville@tuxdriver.com> Fri Oct 18 14:03:54 2013 -0400
tree 44f34f9b4467f91f75f9000428757ffbfd273882
parent 4a32c36daa37963cab9140fe9da9c62187931e3c

rt2x00: rt2800lib: autodetect 5GHz band support

If the RF chip supports more than 14 channels that
indirectly means that it supports the 5GHz band.
Use this fact to enable 5GHz band support instead
of setting SUPPORT_BAND_5GHZ separately for each
RF chip.

Also move the setup code of the 2GHz band to the
same place.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2800lib.c

diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
index f143075..c5738f1 100644
--- a/drivers/net/wireless/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
@@ -7501,7 +7501,6 @@
 	/*
 	 * Initialize hw_mode information.
 	 */
-	spec->supported_bands = SUPPORT_BAND_2GHZ;
 	spec->supported_rates = SUPPORT_RATE_CCK | SUPPORT_RATE_OFDM;
 
 	switch (rt2x00dev->chip.rf) {
@@ -7513,7 +7512,6 @@
 
 	case RF2750:
 	case RF2850:
-		spec->supported_bands |= SUPPORT_BAND_5GHZ;
 		spec->num_channels = ARRAY_SIZE(rf_vals);
 		spec->channels = rf_vals;
 		break;
@@ -7537,13 +7535,11 @@
 
 	case RF3052:
 	case RF3053:
-		spec->supported_bands |= SUPPORT_BAND_5GHZ;
 		spec->num_channels = ARRAY_SIZE(rf_vals_3x);
 		spec->channels = rf_vals_3x;
 		break;
 
 	case RF5592:
-		spec->supported_bands |= SUPPORT_BAND_5GHZ;
 		rt2800_register_read(rt2x00dev, MAC_DEBUG_INDEX, &reg);
 		if (rt2x00_get_field32(reg, MAC_DEBUG_INDEX_XTAL)) {
 			spec->num_channels = ARRAY_SIZE(rf_vals_5592_xtal40);
@@ -7558,6 +7554,10 @@
 	if (WARN_ON_ONCE(!spec->channels))
 		return -ENODEV;
 
+	spec->supported_bands = SUPPORT_BAND_2GHZ;
+	if (spec->num_channels > 14)
+		spec->supported_bands |= SUPPORT_BAND_5GHZ;
+
 	/*
 	 * Initialize HT information.
 	 */