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Message-ID: <53A6C0FF.9090104@openwrt.org> Date: Sun, 22 Jun 2014 13:41:51 +0200 From: Felix Fietkau <nbd@...nwrt.org> To: Rostislav Lisovy <lisovy@...il.com>, Johannes Berg <johannes@...solutions.net>, "John W. Linville" <linville@...driver.com>, linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org CC: Michal Sojka <sojkam1@....cvut.cz>, s.sander@...dsys.de, jan-niklas.meier@...kswagen.de, Rostislav Lisovy <rostislav.lisovy@....cvut.cz> Subject: Re: [PATCH 2/2] cfg80211: Use 5MHz bandwidth by default when checking usable channels On 2014-04-15 14:37, Rostislav Lisovy wrote: > Current code checks if the 20MHz bandwidth is allowed for > particular channel -- if it is not, the channel is disabled. > Since we need to use 5/10 MHz channels, this code is modified in > the way that the default bandwidth to check is 5MHz. If the > maximum bandwidth allowed by the channel is smaller than 5MHz, > the channel is disabled. Otherwise the channel is used and the > flags are set according to the bandwidth allowed by the channel. > > Signed-off-by: Rostislav Lisovy <rostislav.lisovy@....cvut.cz> This change causes a regression and needs to be reverted or fixed. It leaves Channel 12 enabled for US regdomain and does not prevent bringing up AP mode on it (IEEE80211_CHAN_NO_20MHZ does not get set). I think the main problem with this change is that max_bandwidth_khz (which is used to derive the no-10mhz and no-20mhz flags) does not consider the frequency when calculating the max bandwidth. - Felix -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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