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 X-Spam-Level: X-Spam-Status: No, score=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EACC0C433EA for ; Tue, 14 Jul 2020 14:39:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BCCE122571 for ; Tue, 14 Jul 2020 14:39:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594737591; bh=hhuOWuHf7e1hRbr1agT3ODhnh3OFAi7Fw/8QD9fmEfE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=B2Gi+io/zprFxhg7xZ1P3xpbpkreel8yMmJuZHUy/uuvHduVkwcwBAk3ljcow9avg qolK1Sm7fALJvRoJC6GdDSm6WVEfAjkRG1iaRfWZr8cde7/F2pTCg0VC82J+BtawXa 7soEOw+ml5E2YJIoJ6ZxCqiIPPDvd9txjiqFSUCM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729143AbgGNOju (ORCPT ); Tue, 14 Jul 2020 10:39:50 -0400 Received: from mail.kernel.org ([198.145.29.99]:55198 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729093AbgGNOjp (ORCPT ); Tue, 14 Jul 2020 10:39:45 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7732B22571; Tue, 14 Jul 2020 14:39:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594737584; bh=hhuOWuHf7e1hRbr1agT3ODhnh3OFAi7Fw/8QD9fmEfE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qu6bXv7fCu2BQN4KoSVPSLCjPFeOJ8w+FLkbT9C1YwwVI//MPpFrx9xw7Jfcof3rU L/EWoLGUrRbZY9dYBy22oDkVtYPbeLdiRpm9pPUDT/6Hm5DqTJyw/zREqoipBO1J5r L8GXDM9gsMoIS3uO5qNHPCCXLVTuOgMcs9BOK+Dg= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Tom Rix , James Bottomley , "Martin K . Petersen" , Sasha Levin , linux-scsi@vger.kernel.org, clang-built-linux@googlegroups.com Subject: [PATCH AUTOSEL 4.19 05/13] scsi: scsi_transport_spi: Fix function pointer check Date: Tue, 14 Jul 2020 10:39:29 -0400 Message-Id: <20200714143937.4035685-5-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200714143937.4035685-1-sashal@kernel.org> References: <20200714143937.4035685-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Tom Rix [ Upstream commit 5aee52c44d9170591df65fafa1cd408acc1225ce ] clang static analysis flags several null function pointer problems. drivers/scsi/scsi_transport_spi.c:374:1: warning: Called function pointer is null (null dereference) [core.CallAndMessage] spi_transport_max_attr(offset, "%d\n"); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Reviewing the store_spi_store_max macro if (i->f->set_##field) return -EINVAL; should be if (!i->f->set_##field) return -EINVAL; Link: https://lore.kernel.org/r/20200627133242.21618-1-trix@redhat.com Reviewed-by: James Bottomley Signed-off-by: Tom Rix Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/scsi_transport_spi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/scsi_transport_spi.c b/drivers/scsi/scsi_transport_spi.c index 40b85b752b794..69213842e63e0 100644 --- a/drivers/scsi/scsi_transport_spi.c +++ b/drivers/scsi/scsi_transport_spi.c @@ -352,7 +352,7 @@ store_spi_transport_##field(struct device *dev, \ struct spi_transport_attrs *tp \ = (struct spi_transport_attrs *)&starget->starget_data; \ \ - if (i->f->set_##field) \ + if (!i->f->set_##field) \ return -EINVAL; \ val = simple_strtoul(buf, NULL, 0); \ if (val > tp->max_##field) \ -- 2.25.1