netdev - Re: [PATCH] wifi: rsi: Do not configure WoWlan in shutdown hook if not enabled

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Message-ID: <ZHWnfhh26QVBZxi5@corigine.com>
Date: Tue, 30 May 2023 09:36:30 +0200
From: Simon Horman <simon.horman@...igine.com>
To: Marek Vasut <marex@...x.de>
Cc: linux-wireless@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Jilin Yuan <yuanjilin@...rlc.com>,
	Kalle Valo <kvalo@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	netdev@...r.kernel.org
Subject: Re: [PATCH] wifi: rsi: Do not configure WoWlan in shutdown hook if
 not enabled

On Sun, May 28, 2023 at 12:28:33AM +0200, Marek Vasut wrote:
> In case WoWlan was never configured during the operation of the system,
> the hw->wiphy->wowlan_config will be NULL. rsi_config_wowlan() checks
> whether wowlan_config is non-NULL and if it is not, then WARNs about it.
> The warning is valid, as during normal operation the rsi_config_wowlan()
> should only ever be called with non-NULL wowlan_config. In shutdown this
> rsi_config_wowlan() should only ever be called if WoWlan was configured
> before by the user.
> 
> Add checks for non-NULL wowlan_config into the shutdown hook. While at it,
> check whether the wiphy is also non-NULL before accessing wowlan_config .
> Drop the single-use wowlan_config variable, just inline it into function
> call.
> 
> Fixes: 16bbc3eb8372 ("rsi: fix null pointer dereference during rsi_shutdown()")

nit: no blank line here

> Signed-off-by: Marek Vasut <marex@...x.de>

Reviewed-by: Simon Horman <simon.horman@...igine.com>