Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756594AbdIHNkv (ORCPT ); Fri, 8 Sep 2017 09:40:51 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:36084 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933108AbdIHNWk (ORCPT ); Fri, 8 Sep 2017 09:22:40 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Colin Ian King Subject: [PATCH 4.12 09/43] staging/rts5208: fix incorrect shift to extract upper nybble Date: Fri, 8 Sep 2017 15:18:57 +0200 Message-Id: <20170908131826.911501873@linuxfoundation.org> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20170908131826.555428826@linuxfoundation.org> References: <20170908131826.555428826@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1212 Lines: 34 4.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Colin Ian King commit 34ff1bf4920471cff66775dc39537b15c5f0feff upstream. The mask of sns_key_info1 suggests the upper nybble is being extracted however the following shift of 8 bits is too large and always results in 0. Fix this by shifting only by 4 bits to correctly get the upper nybble. Detected by CoverityScan, CID#142891 ("Operands don't affect result") Fixes: fa590c222fba ("staging: rts5208: add support for rts5208 and rts5288") Signed-off-by: Colin Ian King Signed-off-by: Greg Kroah-Hartman --- drivers/staging/rts5208/rtsx_scsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/staging/rts5208/rtsx_scsi.c +++ b/drivers/staging/rts5208/rtsx_scsi.c @@ -414,7 +414,7 @@ void set_sense_data(struct rtsx_chip *ch sense->ascq = ascq; if (sns_key_info0 != 0) { sense->sns_key_info[0] = SKSV | sns_key_info0; - sense->sns_key_info[1] = (sns_key_info1 & 0xf0) >> 8; + sense->sns_key_info[1] = (sns_key_info1 & 0xf0) >> 4; sense->sns_key_info[2] = sns_key_info1 & 0x0f; } }