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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,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 48C2AC2D0C5 for ; Mon, 15 Mar 2021 13:58:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2C1EF64EF9 for ; Mon, 15 Mar 2021 13:58:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232217AbhCON55 (ORCPT ); Mon, 15 Mar 2021 09:57:57 -0400 Received: from mail.kernel.org ([198.145.29.99]:58198 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231445AbhCONy3 (ORCPT ); Mon, 15 Mar 2021 09:54:29 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 19FA364EF8; Mon, 15 Mar 2021 13:54:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1615816465; bh=b+x86pNFQz9OjbNkJFCrYhX1jcF9AiTdcI+7loYAAec=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TfRR38rUXuOkyi91/rq2lcDCq2Y9SLMlxqg5eQdPl/YKxCVK+0Gj/olTWFaBN2NE8 MpptDwu9/2KQIH2MqeV/+TYcqEcOpEFN8kchVbjQGtBBuoLMzQ5Qtgbs/ZCo2fl/QC 8fsbFpDIq/JLhdc9pu5/22bNjC9j/QnxvPrhxZMc= From: gregkh@linuxfoundation.org To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ian Abbott Subject: [PATCH 4.9 55/78] staging: comedi: das800: Fix endian problem for AI command data Date: Mon, 15 Mar 2021 14:52:18 +0100 Message-Id: <20210315135213.880534562@linuxfoundation.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210315135212.060847074@linuxfoundation.org> References: <20210315135212.060847074@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: Greg Kroah-Hartman From: Ian Abbott commit 459b1e8c8fe97fcba0bd1b623471713dce2c5eaf upstream. The analog input subdevice supports Comedi asynchronous commands that use Comedi's 16-bit sample format. However, the call to `comedi_buf_write_samples()` is passing the address of a 32-bit integer variable. On bigendian machines, this will copy 2 bytes from the wrong end of the 32-bit value. Fix it by changing the type of the variable holding the sample value to `unsigned short`. Fixes: ad9eb43c93d8 ("staging: comedi: das800: use comedi_buf_write_samples()") Cc: # 3.19+ Signed-off-by: Ian Abbott Link: https://lore.kernel.org/r/20210223143055.257402-6-abbotti@mev.co.uk Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/das800.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/staging/comedi/drivers/das800.c +++ b/drivers/staging/comedi/drivers/das800.c @@ -436,7 +436,7 @@ static irqreturn_t das800_interrupt(int struct comedi_cmd *cmd; unsigned long irq_flags; unsigned int status; - unsigned int val; + unsigned short val; bool fifo_empty; bool fifo_overflow; int i;