From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965523AbdJQS0b (ORCPT ); Tue, 17 Oct 2017 14:26:31 -0400 Received: from esa7.dell-outbound.iphmx.com ([68.232.153.96]:22130 "EHLO esa7.dell-outbound.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S937368AbdJQSWH (ORCPT ); Tue, 17 Oct 2017 14:22:07 -0400 X-LoopCount0: from 10.208.86.39 X-IronPort-AV: E=Sophos;i="5.43,391,1503378000"; d="scan'208";a="161471156" X-DLP: DLP_GlobalPCIDSS From: Mario Limonciello To: dvhart@infradead.org, Andy Shevchenko Cc: LKML , platform-driver-x86@vger.kernel.org, Andy Lutomirski , quasisec@google.com, pali.rohar@gmail.com, rjw@rjwysocki.net, mjg59@google.com, hch@lst.de, Greg KH , Alan Cox , Mario Limonciello Subject: [PATCH v9 03/17] platform/x86: dell-wmi: clean up wmi descriptor check Date: Tue, 17 Oct 2017 13:21:47 -0500 Message-Id: X-Mailer: git-send-email 2.7.4 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Some cases the wrong type was used for errors and checks can be done more cleanly. Signed-off-by: Mario Limonciello Reviewed-by: Edward O'Callaghan Suggested-by: Andy Shevchenko --- drivers/platform/x86/dell-wmi.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/platform/x86/dell-wmi.c b/drivers/platform/x86/dell-wmi.c index 2cfaaa8faf0a..ece2fe341f01 100644 --- a/drivers/platform/x86/dell-wmi.c +++ b/drivers/platform/x86/dell-wmi.c @@ -663,19 +663,19 @@ static int dell_wmi_check_descriptor_buffer(struct wmi_device *wdev) buffer = (u32 *)obj->buffer.pointer; - if (buffer[0] != 0x4C4C4544 && buffer[1] != 0x494D5720) { - dev_err(&wdev->dev, "Dell descriptor buffer has invalid signature (%*ph)\n", - 8, buffer); + if (strncmp(obj->string.pointer, "DELL WMI", 8) != 0) { + dev_err(&wdev->dev, "Dell descriptor buffer has invalid signature (%8ph)\n", + buffer); ret = -EINVAL; goto out; } if (buffer[2] != 0 && buffer[2] != 1) - dev_warn(&wdev->dev, "Dell descriptor buffer has unknown version (%d)\n", + dev_warn(&wdev->dev, "Dell descriptor buffer has unknown version (%u)\n", buffer[2]); if (buffer[3] != 4096) - dev_warn(&wdev->dev, "Dell descriptor buffer has invalid buffer length (%d)\n", + dev_warn(&wdev->dev, "Dell descriptor buffer has invalid buffer length (%u)\n", buffer[3]); priv->interface_version = buffer[2]; -- 2.14.1