You are right, it is possible. I will fix my patch and resend. Thank you.
пт, 10 янв. 2020 г. в 11:27, Kalle Valo <kvalo@xxxxxxxxxxxxxx>:
>
> Denis Kalashnikov <denis281089@xxxxxxxxx> writes:
>
> > Some of the Mikrotik R11e-2HPnD cards have EEPROM where is
> > flashed that a card has 3 chains, but actually all this cards
> > have only 2. This leads ath9k to write periodically into the logs:
> > 'ath: phy0: Unable to reset channel, reset status -5' and
> > stations don't see that AP.
> >
> > Mikrotik R11e-2HPnD is based on AR9582 chip.
> >
> > Signed-off-by: Denis Kalashnikov <denis281089@xxxxxxxxx>
> > ---
> > drivers/net/wireless/ath/ath9k/ar9003_eeprom.c | 9 +++++++++
> > 1 file changed, 9 insertions(+)
> >
> > diff --git a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
> > b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
> > index b4885a700296..554a81400648 100644
> > --- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
> > +++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
> > @@ -3373,6 +3373,15 @@ static int
> > ar9300_eeprom_restore_internal(struct ath_hw *ah,
> > cptr -= (COMP_HDR_LEN + osize + COMP_CKSUM_LEN);
> > }
> >
> > + /**
> > + * Fix firmware bug of some Mikrotik R11e-2HPnD cards (based on AR9582)
> > + * that claim that they have 3 chains, but actually have only 2.
> > + */
> > + if (AR_SREV_9580(ah)) {
> > + eep = (struct ar9300_eeprom *)mptr;
> > + eep->baseEepHeader.txrxMask &= 0x33;
> > + }
>
> What about 9580 devices which really have 3 chains, doesn't this broke
> those? Or is such setup impossible?
>
> --
> https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
