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From: "Toke Høiland-Jørgensen" <toke@toke.dk>
To: "Nerijus Bendžiūnas" <nerijus.bendziunas@gmail.com>,
	linux-wireless@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] wifi: ath9k: refuse spectral scan control while the hardware is disabled
Date: Wed, 09 Sep 2026 13:02:56 +0200	[thread overview]
Message-ID: <878q5ag00v.fsf@toke.dk> (raw)
In-Reply-To: <20260908180308.788642-1-nerijus.bendziunas@gmail.com>

Nerijus Bendžiūnas <nerijus.bendziunas@gmail.com> writes:

> The spectral_scan_ctl debugfs file drives PHY register writes, and
> nothing checks whether the hardware is up. While the interface is down
> the chip is asleep, and on the AR9271 those writes go over WMI to a
> sleeping target and hang the firmware until the device is re-enumerated.
>
> Refuse the write with -EBUSY while ATH_OP_INVALID is set. The reset
> control already refuses on the same flag.
>
> Assisted-by: LLM
> Signed-off-by: Nerijus Bendžiūnas <nerijus.bendziunas@gmail.com>

Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>

      reply	other threads:[~2026-09-09 11:03 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-08 18:03 Nerijus Bendžiūnas
2026-09-09 11:02 ` Toke Høiland-Jørgensen [this message]

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