[PATCH] wifi: ath12k: Remove broken frequency range filtering

[Saikiran <bjsaikiran@gmail.com>]

Between kernel 6.16 and 6.17, ath12k added frequency range filtering in
ath12k_reg_update_chan_list() that filters channels based on
ar->freq_range.start_freq and ar->freq_range.end_freq.

However, these values are reset to 0 in ath12k_regd_update(), causing
the filter to skip ALL channels:
    if (channel_freq < 0 || channel_freq > 0)  // Always true when end_freq=0
        continue;  // All channels skipped

This results in no channel list sent to firmware, causing 5 GHz Wi-Fi
to stop working.

Fix by removing the broken frequency range filtering. The firmware
itself handles frequency range restrictions based on hardware capabilities.

Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c5-00302 (Lenovo Yoga Slim 7x)

Signed-off-by: Saikiran <bjsaikiran@gmail.com>
---
 drivers/net/wireless/ath/ath12k/reg.c | 13 -------------
 1 file changed, 13 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/reg.c b/drivers/net/wireless/ath/ath12k/reg.c
index 2dfcef013277..2d9adc74ac6e 100644
--- a/drivers/net/wireless/ath/ath12k/reg.c
+++ b/drivers/net/wireless/ath/ath12k/reg.c
@@ -153,12 +153,6 @@ int ath12k_reg_update_chan_list(struct ath12k *ar, bool wait)
 			if (bands[band]->channels[i].flags &
 			    IEEE80211_CHAN_DISABLED)
 				continue;
-			/* Skip Channels that are not in current radio's range */
-			if (bands[band]->channels[i].center_freq <
-			    KHZ_TO_MHZ(ar->freq_range.start_freq) ||
-			    bands[band]->channels[i].center_freq >
-			    KHZ_TO_MHZ(ar->freq_range.end_freq))
-				continue;
 
 			num_channels++;
 		}
@@ -190,13 +184,6 @@ int ath12k_reg_update_chan_list(struct ath12k *ar, bool wait)
 			if (channel->flags & IEEE80211_CHAN_DISABLED)
 				continue;
 
-			/* Skip Channels that are not in current radio's range */
-			if (bands[band]->channels[i].center_freq <
-			    KHZ_TO_MHZ(ar->freq_range.start_freq) ||
-			    bands[band]->channels[i].center_freq >
-			    KHZ_TO_MHZ(ar->freq_range.end_freq))
-				continue;
-
 			/* TODO: Set to true/false based on some condition? */
 			ch->allow_ht = true;
 			ch->allow_vht = true;
-- 
2.51.0