Patch "dma-buf: add support for compat ioctl" has been added to the 4.9-stable tree

Patch "dma-buf: add support for compat ioctl" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    dma-buf: add support for compat ioctl

to the 4.9-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:
     dma-buf-add-support-for-compat-ioctl.patch
and it can be found in the queue-4.9 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 888022c0473d079bff9b47fb50434b1f20f8f37f Mon Sep 17 00:00:00 2001
From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Tue, 21 Feb 2017 14:21:01 +0100
Subject: dma-buf: add support for compat ioctl
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Marek Szyprowski <m.szyprowski@samsung.com>

commit 888022c0473d079bff9b47fb50434b1f20f8f37f upstream.

Add compat ioctl support to dma-buf. This lets one to use DMA_BUF_IOCTL_SYNC
ioctl from 32bit application on 64bit kernel. Data structures for both 32
and 64bit modes are same, so there is no need for additional translation
layer.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1487683261-2655-1-git-send-email-m.szyprowski@samsung.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/dma-buf/dma-buf.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -303,6 +303,9 @@ static const struct file_operations dma_
 	.llseek		= dma_buf_llseek,
 	.poll		= dma_buf_poll,
 	.unlocked_ioctl	= dma_buf_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl	= dma_buf_ioctl,
+#endif
 };
 
 /*


Patches currently in stable-queue which might be from m.szyprowski@samsung.com are

queue-4.9/dma-buf-add-support-for-compat-ioctl.patch