linux-kernel - Re: [v1] wifi: mwifiex: Fix interface type change

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Date: Fri, 17 May 2024 10:13:12 +0200
From: Francesco Dolcini <francesco@...cini.it>
To: Kalle Valo <kvalo@...nel.org>
Cc: Francesco Dolcini <francesco@...cini.it>,
	Brian Norris <briannorris@...omium.org>,
	Rafael Beims <rafael.beims@...adex.com>,
	linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
	tsung-hsien.hsieh@....com, David Lin <yu-hao.lin@....com>,
	stable@...r.kernel.org,
	Francesco Dolcini <francesco.dolcini@...adex.com>
Subject: Re: [v1] wifi: mwifiex: Fix interface type change

On Fri, May 17, 2024 at 08:04:24AM +0000, Kalle Valo wrote:
> Francesco Dolcini <francesco@...cini.it> wrote:
> 
> > From: Rafael Beims <rafael.beims@...adex.com>
> > 
> > When changing the interface type we also need to update the bss_num, the
> > driver private data is searched based on a unique (bss_type, bss_num)
> > tuple, therefore every time bss_type changes, bss_num must also change.
> > 
> > This fixes for example an issue in which, after the mode changed, a
> > wireless scan on the changed interface would not finish, leading to
> > repeated -EBUSY messages to userspace when other scan requests were
> > sent.
> > 
> > Fixes: c606008b7062 ("mwifiex: Properly initialize private structure on interface type changes")
> > Cc: stable@...r.kernel.org
> > Signed-off-by: Rafael Beims <rafael.beims@...adex.com>
> > Signed-off-by: Francesco Dolcini <francesco.dolcini@...adex.com>
> 
> BTW I removed the Reviewed-by from the commit message, I don't see the need to
> have both Reviewed-by and s-o-b.

Sure, I was in doubt about this, in the end I added it because I have seen
this done in other subsystems, e.g. commit 6a4020b4c639 ("drm/bridge:
tc358768: fix PLL parameters computation").

Thanks
Francesco