[OpenWrt-Devel] [PATCH] ralink: remove VHT capabilities when not using 802.11ac

[wengbj]

The mt76 driver might have some problem working with MT7602.
MT7602 should not have VHT capabilities . But the driver not identity properly.

Signed-off-by: wengbj <fl.service at t-firefly.com>
---
 .../0001-mt7602-remove-vht-capabilities.patch      |   46 ++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 package/kernel/mt76/patches/0001-mt7602-remove-vht-capabilities.patch

diff --git a/package/kernel/mt76/patches/0001-mt7602-remove-vht-capabilities.patch b/package/kernel/mt76/patches/0001-mt7602-remove-vht-capabilities.patch
new file mode 100644
index 0000000..0a1f9c9
--- /dev/null
+++ b/package/kernel/mt76/patches/0001-mt7602-remove-vht-capabilities.patch
@@ -0,0 +1,46 @@
+--- a/init.c
++++ b/init.c
+@@ -682,24 +682,27 @@ mt76_init_sband(struct mt76_dev *dev, st
+ 	ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
+ 	ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_4;
+ 
+-	vht_cap = &sband->vht_cap;
+-	vht_cap->vht_supported = true;
++	if (dev->cap.has_5ghz)
++	{
++		vht_cap = &sband->vht_cap;
++		vht_cap->vht_supported = true;
+ 
+-	mcs_map = (IEEE80211_VHT_MCS_SUPPORT_0_9 << (0 * 2)) |
+-		  (IEEE80211_VHT_MCS_SUPPORT_0_9 << (1 * 2)) |
+-		  (IEEE80211_VHT_MCS_NOT_SUPPORTED << (2 * 2)) |
+-		  (IEEE80211_VHT_MCS_NOT_SUPPORTED << (3 * 2)) |
+-		  (IEEE80211_VHT_MCS_NOT_SUPPORTED << (4 * 2)) |
+-		  (IEEE80211_VHT_MCS_NOT_SUPPORTED << (5 * 2)) |
+-		  (IEEE80211_VHT_MCS_NOT_SUPPORTED << (6 * 2)) |
+-		  (IEEE80211_VHT_MCS_NOT_SUPPORTED << (7 * 2));
++		mcs_map = (IEEE80211_VHT_MCS_SUPPORT_0_9 << (0 * 2)) |
++			  (IEEE80211_VHT_MCS_SUPPORT_0_9 << (1 * 2)) |
++			  (IEEE80211_VHT_MCS_NOT_SUPPORTED << (2 * 2)) |
++			  (IEEE80211_VHT_MCS_NOT_SUPPORTED << (3 * 2)) |
++			  (IEEE80211_VHT_MCS_NOT_SUPPORTED << (4 * 2)) |
++			  (IEEE80211_VHT_MCS_NOT_SUPPORTED << (5 * 2)) |
++			  (IEEE80211_VHT_MCS_NOT_SUPPORTED << (6 * 2)) |
++			  (IEEE80211_VHT_MCS_NOT_SUPPORTED << (7 * 2));
+ 
+-	vht_cap->vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map);
+-	vht_cap->vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map);
+-	vht_cap->cap = IEEE80211_VHT_CAP_RXLDPC |
+-		       IEEE80211_VHT_CAP_TXSTBC |
+-		       IEEE80211_VHT_CAP_RXSTBC_1 |
+-			   IEEE80211_VHT_CAP_SHORT_GI_80;
++		vht_cap->vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map);
++		vht_cap->vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map);
++		vht_cap->cap = IEEE80211_VHT_CAP_RXLDPC |
++			       IEEE80211_VHT_CAP_TXSTBC |
++			       IEEE80211_VHT_CAP_RXSTBC_1 |
++			       IEEE80211_VHT_CAP_SHORT_GI_80;
++	}
+ 
+ 	dev->chandef.chan = &sband->channels[0];
+ 
-- 
1.7.9.5
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