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Subject: Re: [PATCH 4/4] mt76: mt76x02: run mt76x02_edcca_init atomically in
 mt76_edcca_set
To:     Lorenzo Bianconi <lorenzo@kernel.org>
Cc:     lorenzo.bianconi@redhat.com, linux-wireless@vger.kernel.org,
        sgruszka@redhat.com
References: <cover.1557567465.git.lorenzo@kernel.org>
 <436469e1a4c1e0c11ae43a0b002378708d31f15d.1557567465.git.lorenzo@kernel.org>
From:   Felix Fietkau <nbd@nbd.name>
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Date:   Sat, 11 May 2019 16:22:44 +0200
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On 2019-05-11 12:17, Lorenzo Bianconi wrote:
> Run mt76x02_edcca_init atomically in mt76_edcca_set since it runs
> concurrently with calibration work and mt76x2_set_channel.
> Introduce __mt76x02_edcca_init helper routine
> 
> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
I don't think this is enough. To prevent issues with calibration, we
probably need to hold the mutex for the duration of the calibration
anyway. Otherwise it might get enabled right in the middle of it and
screw things up.
Also, it probably simplifies the patch if you don't add the wrapper
function that takes the mutex, and instead just explicitly take the
mutex where needed.

- Felix