From: Mark Craske <Mark_Craske@mentor.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: <linux-kernel@vger.kernel.org>,
"George G. Davis" <George_Davis@mentor.com>,
Jiada Wang <Jiada_Wang@mentor.com>
Subject: [PATCH v1 0/2] Two small dma-coherent bug fixes
Date: Thu, 15 Sep 2016 10:39:57 +0100 [thread overview]
Message-ID: <1473932399-23224-1-git-send-email-Mark_Craske@mentor.com> (raw)
In-Reply-To: <Mark Craske <Mark_Craske@mentor.com>
This patchset contains the following commits:
Bastian Hecht (1):
drivers: dma-coherent: Move spinlock in dma_alloc_from_coherent()
George G. Davis (1):
drivers: dma-coherent: Fix DMA coherent size for less than page
drivers/base/dma-coherent.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
Background information
----------------------
These 2 commits were originally developed and validated on an ARM i.MX6 based
commercial project running a highly modified 3.14 Linux kernel.
The commits were needed to amend dma_mmap_from_coherent() to deal correctly
with mappings of less than one page, and to improve latency on SMP systems
where large DMA buffers are used.
The commits have been forward-ported to driver-core-next master branch HEAD
(c693593 Linux 4.8-rc5)
Commit details
--------------
This patchset fixes a couple of problems with dma-coherent seen
on a commercial i.MX6 based system.
Note: Testing has only been done on an ARM i.MX6 based platform.
--
1.7.9.5
next parent reply other threads:[~2016-09-15 9:39 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Mark Craske <Mark_Craske@mentor.com>
2016-09-15 9:39 ` Mark Craske [this message]
2016-09-15 9:39 ` [PATCH v1 1/2] drivers: dma-coherent: Fix DMA coherent size for less than page Mark Craske
2016-09-27 10:53 ` Greg Kroah-Hartman
2016-09-15 9:39 ` [PATCH v1 2/2] drivers: dma-coherent: Move spinlock in dma_alloc_from_coherent() Mark Craske
2016-09-28 7:51 ` [PATCH v2 0/2] Two small dma-coherent bug fixes Mark Craske
2016-09-28 7:51 ` [PATCH v2 1/2] drivers: dma-coherent: Fix DMA coherent size for less than page Mark Craske
2016-09-28 7:51 ` [PATCH v2 2/2] drivers: dma-coherent: Move spinlock in dma_alloc_from_coherent() Mark Craske
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