wifi: cfg80211: remove ieee80211_s1g_channel_width

With the introduction of proper S1G channel flags, this function is no
longer used. Remove it.

Signed-off-by: Lachlan Hodges <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Johannes Berg <[e-mail]>

include/net/cfg80211.h

···
 }
 
 /**
- * ieee80211_s1g_channel_width - get allowed channel width from @chan
- *
- * Only allowed for band NL80211_BAND_S1GHZ
- * @chan: channel
- * Return: The allowed channel width for this center_freq
- */
-enum nl80211_chan_width
-ieee80211_s1g_channel_width(const struct ieee80211_channel *chan);
-
-/**
  * ieee80211_channel_to_freq_khz - convert channel number to frequency
  * @chan: channel number
  * @band: band, necessary due to channel number overlap

net/wireless/util.c

···
 }
 EXPORT_SYMBOL(ieee80211_channel_to_freq_khz);
 
-enum nl80211_chan_width
-ieee80211_s1g_channel_width(const struct ieee80211_channel *chan)
-{
-	if (WARN_ON(!chan || chan->band != NL80211_BAND_S1GHZ))
-		return NL80211_CHAN_WIDTH_20_NOHT;
-
-	/*S1G defines a single allowed channel width per channel.
-	 * Extract that width here.
-	 */
-	if (chan->flags & IEEE80211_CHAN_1MHZ)
-		return NL80211_CHAN_WIDTH_1;
-	else if (chan->flags & IEEE80211_CHAN_2MHZ)
-		return NL80211_CHAN_WIDTH_2;
-	else if (chan->flags & IEEE80211_CHAN_4MHZ)
-		return NL80211_CHAN_WIDTH_4;
-	else if (chan->flags & IEEE80211_CHAN_8MHZ)
-		return NL80211_CHAN_WIDTH_8;
-	else if (chan->flags & IEEE80211_CHAN_16MHZ)
-		return NL80211_CHAN_WIDTH_16;
-
-	pr_err("unknown channel width for channel at %dKHz?\n",
-	       ieee80211_channel_to_khz(chan));
-
-	return NL80211_CHAN_WIDTH_1;
-}
-EXPORT_SYMBOL(ieee80211_s1g_channel_width);
-
 int ieee80211_freq_khz_to_channel(u32 freq)
 {
 	/* TODO: just handle MHz for now */