From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 129FBC433EF for ; Tue, 5 Apr 2022 22:55:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1454876AbiDEWjh (ORCPT ); Tue, 5 Apr 2022 18:39:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39194 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349447AbiDEJtx (ORCPT ); Tue, 5 Apr 2022 05:49:53 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D516527B07; Tue, 5 Apr 2022 02:46:09 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 8EC97B817D3; Tue, 5 Apr 2022 09:46:08 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E5D96C385A1; Tue, 5 Apr 2022 09:46:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1649151967; bh=G9FVdtdJd+SQe71GKHlVvftx16eoviFsChCzeAQD3Wc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=0EIEr5/nU/fRdMDJSq8ZdLhq7fcceVmjerhEFTTzjZj1HZ71Rg2h7hiQBUT1Qw4p5 3Xiyqt8z8R8ORoO2o5tGdaeyrMlWgqHzUwWtLUuCg/f/C7u9icKHkCcMBwH+7yZfFH kXD4xFo9G5Up6jDnqNXvrfuNArcbynnFD99wLOto= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jiasheng Jiang , Oded Gabbay , Sasha Levin Subject: [PATCH 5.15 605/913] habanalabs: Add check for pci_enable_device Date: Tue, 5 Apr 2022 09:27:47 +0200 Message-Id: <20220405070357.976671039@linuxfoundation.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220405070339.801210740@linuxfoundation.org> References: <20220405070339.801210740@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jiasheng Jiang [ Upstream commit 9c27896ac1bb83ea5c461ce6f7089d02102a2b21 ] As the potential failure of the pci_enable_device(), it should be better to check the return value and return error if fails. Fixes: 70b2f993ea4a ("habanalabs: create common folder") Signed-off-by: Jiasheng Jiang Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay Signed-off-by: Sasha Levin --- drivers/misc/habanalabs/common/debugfs.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/misc/habanalabs/common/debugfs.c b/drivers/misc/habanalabs/common/debugfs.c index 985f1f3dbd20..0b46fd22c411 100644 --- a/drivers/misc/habanalabs/common/debugfs.c +++ b/drivers/misc/habanalabs/common/debugfs.c @@ -856,6 +856,8 @@ static ssize_t hl_set_power_state(struct file *f, const char __user *buf, pci_set_power_state(hdev->pdev, PCI_D0); pci_restore_state(hdev->pdev); rc = pci_enable_device(hdev->pdev); + if (rc < 0) + return rc; } else if (value == 2) { pci_save_state(hdev->pdev); pci_disable_device(hdev->pdev); -- 2.34.1