From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:42778 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965417AbcJ1RdS (ORCPT ); Fri, 28 Oct 2016 13:33:18 -0400 Subject: Patch "uio: fix dmem_region_start computation" has been added to the 4.4-stable tree To: viktorin@rehivetech.com, gregkh@linuxfoundation.org Cc: , From: Date: Fri, 28 Oct 2016 13:33:24 -0400 Message-ID: <147767600410162@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled uio: fix dmem_region_start computation to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: uio-fix-dmem_region_start-computation.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 4d31a2588ae37a5d0f61f4d956454e9504846aeb Mon Sep 17 00:00:00 2001 From: Jan Viktorin Date: Tue, 17 May 2016 11:22:17 +0200 Subject: uio: fix dmem_region_start computation From: Jan Viktorin commit 4d31a2588ae37a5d0f61f4d956454e9504846aeb upstream. The variable i contains a total number of resources (including IORESOURCE_IRQ). However, we want the dmem_region_start to point after the last resource of type IORESOURCE_MEM. The original behaviour leads (very likely) to skipping several UIO mapping regions and makes them useless. Fix this by computing dmem_region_start from the uiomem which points to the last used UIO mapping. Fixes: 0a0c3b5a24bd ("Add new uio device for dynamic memory allocation") Signed-off-by: Jan Viktorin Signed-off-by: Greg Kroah-Hartman --- drivers/uio/uio_dmem_genirq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/uio/uio_dmem_genirq.c +++ b/drivers/uio/uio_dmem_genirq.c @@ -229,7 +229,7 @@ static int uio_dmem_genirq_probe(struct ++uiomem; } - priv->dmem_region_start = i; + priv->dmem_region_start = uiomem - &uioinfo->mem[0]; priv->num_dmem_regions = pdata->num_dynamic_regions; for (i = 0; i < pdata->num_dynamic_regions; ++i) { Patches currently in stable-queue which might be from viktorin@rehivetech.com are queue-4.4/uio-fix-dmem_region_start-computation.patch