+ Rafał
On 7/30/2018 5:39 PM, Sven Eckelmann wrote:
Tri-band devices (1x 2.4GHz + 2x 5GHz) often incorporate special filters in
the RX and TX path. These filtered channel can in theory still be used by
the hardware but the signal strength is reduced so much that it makes no
sense.
There is already a DT property to limit the available channels but ath10k
has to manually call this functionality to limit the currrently set wiphy
channels further.
Wondering whether we can call it in wiphy_register() like below. Not
sure why we did not explore that with the introduction of it by Rafał.
Maybe he remembers. I did not find something in that direction in
patchwork, but may have missed it. I know mt76 drops the band reference
if it ends up with all channels disabled. Maybe that was the reason.
Regards,
Arend
---
diff --git a/net/wireless/core.c b/net/wireless/core.c
index a88551f..2e00cb1 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -742,6 +742,8 @@ int wiphy_register(struct wiphy *wiphy)
if (res)
return res;
+ wiphy_read_of_freq_limits(wiphy);
+
/* sanity check supported bands/channels */
for (band = 0; band < NUM_NL80211_BANDS; band++) {
u16 types = 0;
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