I keep this setting on all the time and just when i read this mail again i'm suspicious if the bluetooth could actually have an impact on wifi reception? I am using AR9462 card and it can transmit at 215Mbps average, but receives only about 125Mbps (2spatial streams AP, 2.4GHz, AR9531) On 23/08/2018, Kalle Valo <kvalo@xxxxxxxxxxxxxx> wrote: > Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> writes: > >> at 12:15, Kai Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> wrote: >> >>> >>> >>>> On 10 Feb 2018, at 10:05 PM, Felix Fietkau <nbd@xxxxxxxx> wrote: >>>> >>>> On 2018-02-10 14:56, Kai Heng Feng wrote: >>>>>> On 9 Feb 2018, at 3:16 PM, Kalle Valo <kvalo@xxxxxxxxxxxxxx> wrote: >>>>>> Sure, but we have to make sure that we don't create regressions on >>>>>> existing systems. For example, did you test this with any system >>>>>> which >>>>>> don't support btcoex? (just asking, haven't tested this myself) >>>>> >>>>> No not really, but I will definitely test it. >>>>> The only module I have that uses ath9k is Dell’s DW1707. >>>>> How do I check if it support btcoex or not? >>>> I just reviewed the code again, and I am sure that we cannot merge this >>>> patch. Enabling the btcoex parameter makes the driver enable a whole >>>> bunch of code starting timers, listening to some GPIOs, etc. >>>> >>>> On non-btcoex systems, some of those GPIOs might be floating or even >>>> connected to different things, which could cause a lot of undefined >>>> behavior. >>>> >>>> This is simply too big a risk, so there absolutely needs to be a >>>> whitelist for systems that need this, otherwise it has to remain >>>> disabled by default. >>> >>> So what information can we use to whitelist btcoex chips? >>> Can we get btcoex support status at ath9k probing? >> >> Sorry for bringing this up again. >> >> Is DMI based match an acceptable approach for ath9k? > > I don't know what Felix thinkgs, but to me using DMI sounds like a good > idea to try, assuming the matches are unique enough and there's no risk > of enabling bt coex on wrong platforms. Should the PCI bus number etc > checked as well in case the user adds more ath9k devices to the > platform? > > But of course I need to see the patch to comment more. > > -- > Kalle Valo >
