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RE: [PATCH v6] Add new mac80211 driver mwlwifi.

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> Kalle Valo [mailto:kvalo@xxxxxxxxxxxxxx] writes:
> 
> David Lin <dlin@xxxxxxxxxxx> writes:
> 
> > The Linux driver for WRT1900AC. The work was initially developed as
> > part of openwrt effort and maintained on https://github.com/kaloz/mwlwifi.
> >
> > This is still work in progress, with 8864 chipset more mature and
> > tested, while 8897 for the similar use case is added recently.
> >
> > Signed-off-by: David Lin <dlin@xxxxxxxxxxx>
> 
> The commit log is really short. For a new driver you should explain a lot more,
> for example what works and what doesn't. Also it should contained detailed
> info about how and why (!) this conflicts with mwifiex and the way that
> problem was solved.
> 
> Also no new BUG_ON() calls in drivers, please:
> 
> fwcmd.c:        BUG_ON(tid >= SYSADPT_MAX_TID);
> mac80211.c:     BUG_ON(queue > SYSADPT_TX_WMM_QUEUES - 1);
> mac80211.c:             BUG_ON(stream->state !=
> AMPDU_STREAM_IN_PROGRESS);
> tx.c:   BUG_ON(tid > 7);
> tx.c:   BUG_ON(tid >= SYSADPT_MAX_TID);
> tx.c:   BUG_ON(!tx_skb);
> 
> We should start to get rid of all 200+ calls we already have, wireless drivers
> should never call BUG_ON(). Instead use descriptive error message
> (WARN_ON() etc) and bail out nicely with an error. That's much more user
> friendly than crashing the kernel.
> 
> --
> Kalle Valo

I will change BUG_ON() to WARN_ON() for next patch.

Thanks,
David
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