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=-18.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 A270FC4332B for ; Wed, 3 Mar 2021 01:01:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7FD4464FA6 for ; Wed, 3 Mar 2021 01:01:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237641AbhCCAok (ORCPT ); Tue, 2 Mar 2021 19:44:40 -0500 Received: from mail.kernel.org ([198.145.29.99]:51904 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1445858AbhCBQDE (ORCPT ); Tue, 2 Mar 2021 11:03:04 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 269BD64F19; Tue, 2 Mar 2021 14:29:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1614695378; bh=AnrDXOmmPuuUhfjDRUeEsqGL/MKbbS5taMUdawmB8YA=; h=Subject:To:From:Date:From; b=xRiUfoslDKT9G62gO0BrfVpjnb/KfMx5Q/rnumWvQjYjjU0hIej5CwB22ofFsTB+F inGWspBHWjanBbd16C4F0DAv35Xru/8tfvmIwG15HTFMnUWnZnSGdOvW7gSdUr6l/w Wg9H8jLwe3UqyL/YtLFZd8zanXL4d0SLQH+N33Ro= Subject: patch "staging: comedi: pcl818: Fix endian problem for AI command data" added to staging-linus To: abbotti@mev.co.uk, gregkh@linuxfoundation.org, stable@vger.kernel.org From: Date: Tue, 02 Mar 2021 15:29:19 +0100 Message-ID: <16146953592464@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org This is a note to let you know that I've just added the patch titled staging: comedi: pcl818: Fix endian problem for AI command data to my staging git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git in the staging-linus branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will hopefully also be merged in Linus's tree for the next -rc kernel release. If you have any questions about this process, please let me know. >From 6eec186a44c67a5c08adda8fc9d3cd833532a824 Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Tue, 23 Feb 2021 14:30:50 +0000 Subject: staging: comedi: pcl818: Fix endian problem for AI command data 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 parameter. 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 parameter holding the sample value to `unsigned short`. [Note: the bug was introduced in commit edf4537bcbf5 ("staging: comedi: pcl818: use comedi_buf_write_samples()") but the patch applies better to commit d615416de615 ("staging: comedi: pcl818: introduce pcl818_ai_write_sample()").] Fixes: d615416de615 ("staging: comedi: pcl818: introduce pcl818_ai_write_sample()") Cc: # 4.0+ Signed-off-by: Ian Abbott Link: https://lore.kernel.org/r/20210223143055.257402-10-abbotti@mev.co.uk Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/pcl818.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/comedi/drivers/pcl818.c b/drivers/staging/comedi/drivers/pcl818.c index 63e3011158f2..f4b4a686c710 100644 --- a/drivers/staging/comedi/drivers/pcl818.c +++ b/drivers/staging/comedi/drivers/pcl818.c @@ -423,7 +423,7 @@ static int pcl818_ai_eoc(struct comedi_device *dev, static bool pcl818_ai_write_sample(struct comedi_device *dev, struct comedi_subdevice *s, - unsigned int chan, unsigned int val) + unsigned int chan, unsigned short val) { struct pcl818_private *devpriv = dev->private; struct comedi_cmd *cmd = &s->async->cmd; -- 2.30.1