From: <gregkh@linuxfoundation.org>
To: m.szyprowski@samsung.com, gregkh@linuxfoundation.org,
rmk+kernel@arm.linux.org.uk
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "ARM: 8427/1: dma-mapping: add support for offset parameter in dma_mmap()" has been added to the 4.2-stable tree
Date: Sat, 05 Dec 2015 21:51:39 -0800 [thread overview]
Message-ID: <144938109935102@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
ARM: 8427/1: dma-mapping: add support for offset parameter in dma_mmap()
to the 4.2-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:
arm-8427-1-dma-mapping-add-support-for-offset-parameter-in-dma_mmap.patch
and it can be found in the queue-4.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From 7e31210349e9e03a9a4dff31ab5f2bc83e8e84f5 Mon Sep 17 00:00:00 2001
From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Fri, 28 Aug 2015 09:42:09 +0100
Subject: ARM: 8427/1: dma-mapping: add support for offset parameter in dma_mmap()
From: Marek Szyprowski <m.szyprowski@samsung.com>
commit 7e31210349e9e03a9a4dff31ab5f2bc83e8e84f5 upstream.
IOMMU-based dma_mmap() implementation lacked proper support for offset
parameter used in mmap call (it always assumed that mapping starts from
offset zero). This patch adds support for offset parameter to IOMMU-based
implementation.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/arm/mm/dma-mapping.c | 2 ++
1 file changed, 2 insertions(+)
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -1424,6 +1424,8 @@ static int arm_iommu_mmap_attrs(struct d
if (off >= nr_pages || (usize >> PAGE_SHIFT) > nr_pages - off)
return -ENXIO;
+ pages += off;
+
do {
int ret = vm_insert_page(vma, uaddr, *pages++);
if (ret) {
Patches currently in stable-queue which might be from m.szyprowski@samsung.com are
queue-4.2/arm-8427-1-dma-mapping-add-support-for-offset-parameter-in-dma_mmap.patch
queue-4.2/arm-8426-1-dma-mapping-add-missing-range-check-in-dma_mmap.patch
reply other threads:[~2015-12-06 5:51 UTC|newest]
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