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 2D51C28EB for ; Mon, 30 Jan 2023 14:13:54 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7E84FC433D2; Mon, 30 Jan 2023 14:13:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1675088034; bh=8sPm48kRjTqRAvBdL+6nhqa/h/+Zz/g226ir9N1nbgg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EVJF+Yofr0b5fgCka2/jmlWTMa07la/RzaIJmQjCgxjt1oSI7H5PPGkyQXV++qVn5 5kwhOuZP3eiFbRi+BTEhdAQlYd663NsGjU4yecQGGIsYYmiGyc7gs73k+xuwxxzJWH rxhPAd7yFT8XdA9UL2bQ0Yh1qCNNQ5knFzbQGC3A= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Dan Carpenter , "Rafael J. Wysocki" , Sasha Levin Subject: [PATCH 5.15 092/204] thermal/core: fix error code in __thermal_cooling_device_register() Date: Mon, 30 Jan 2023 14:50:57 +0100 Message-Id: <20230130134320.390887218@linuxfoundation.org> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230130134316.327556078@linuxfoundation.org> References: <20230130134316.327556078@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: Dan Carpenter [ Upstream commit e49a1e1ee078aee21006192076a8d93335e0daa9 ] Return an error pointer if ->get_max_state() fails. The current code returns NULL which will cause an oops in the callers. Fixes: c408b3d1d9bb ("thermal: Validate new state in cur_state_store()") Signed-off-by: Dan Carpenter Signed-off-by: Rafael J. Wysocki Stable-dep-of: 6c54b7bc8a31 ("thermal: core: call put_device() only after device_register() fails") Signed-off-by: Sasha Levin --- drivers/thermal/thermal_core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 96d6082864ee..b21d886aef22 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -914,7 +914,8 @@ __thermal_cooling_device_register(struct device_node *np, cdev->device.class = &thermal_class; cdev->devdata = devdata; - if (cdev->ops->get_max_state(cdev, &cdev->max_state)) + ret = cdev->ops->get_max_state(cdev, &cdev->max_state); + if (ret) goto out_kfree_type; thermal_cooling_device_setup_sysfs(cdev); -- 2.39.0