From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B385C1ED38 for ; Tue, 25 Jul 2023 11:13:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DBEFFC433C7; Tue, 25 Jul 2023 11:13:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1690283632; bh=EM3OOHWpgqGXefUtDHnxTio72huuQV9MBXj/Cjp1BA4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pO92iJEZSpmrWvQS1PepPRXZfXGPvNmUuqhDAlk8n6bKcYhjKtk6M90fSwWAUPUGO +U74YZXCGHrtVjzkM6ESwLeE05yri74MnWEHdjhVRjy8xbUtjQKKulsFiEZKDuoIk3 bsZf8sEhdEugaHXXrG1jw83kE1yJAObCbVHy39M4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Marek Vasut , Simon Horman , Kalle Valo , Sasha Levin Subject: [PATCH 5.10 067/509] wifi: rsi: Do not configure WoWlan in shutdown hook if not enabled Date: Tue, 25 Jul 2023 12:40:06 +0200 Message-ID: <20230725104556.768271185@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230725104553.588743331@linuxfoundation.org> References: <20230725104553.588743331@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Marek Vasut [ Upstream commit b241e260820b68c09586e8a0ae0fc23c0e3215bd ] 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()") Signed-off-by: Marek Vasut Reviewed-by: Simon Horman Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20230527222833.273741-1-marex@denx.de Signed-off-by: Sasha Levin --- drivers/net/wireless/rsi/rsi_91x_sdio.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/rsi/rsi_91x_sdio.c b/drivers/net/wireless/rsi/rsi_91x_sdio.c index 8108f941ccd3f..2c26376faeacc 100644 --- a/drivers/net/wireless/rsi/rsi_91x_sdio.c +++ b/drivers/net/wireless/rsi/rsi_91x_sdio.c @@ -1463,10 +1463,8 @@ static void rsi_shutdown(struct device *dev) rsi_dbg(ERR_ZONE, "SDIO Bus shutdown =====>\n"); - if (hw) { - struct cfg80211_wowlan *wowlan = hw->wiphy->wowlan_config; - - if (rsi_config_wowlan(adapter, wowlan)) + if (hw && hw->wiphy && hw->wiphy->wowlan_config) { + if (rsi_config_wowlan(adapter, hw->wiphy->wowlan_config)) rsi_dbg(ERR_ZONE, "Failed to configure WoWLAN\n"); } -- 2.39.2