Hi Greg,
On 2017-04-14 11:19, Greg KH wrote:
On Fri, Apr 14, 2017 at 11:23:20AM +0530, Sumit Semwal wrote:
Upstream commit 888022c0473d079bff9b47fb50434b1f20f8f37f
Subject: dma-buf: add support for compat ioctl
Applicable to: 4.5+ stable kernels
The cc:stable got missed while this patch got applied for mainline; it
allows a 32-bit application to use DMA_BUF_IOCTL_SYNC with 64-bit
kernel.
Is this a new feature being added? Why is this a stable kernel patch?
I don't thing this is a feature. This patch is definitely a bugfix -
without it
the same application on 64bit kernel fails if compiled in 32bit mode and
works
if compiled as 64bit.
I should have added a following tag:
Fixes: c11e391da2a8 ("dma-buf: Add ioctls to allow userspace to flush")
And always cc: the authors of the patch involved when asking for a
stable backport, it keeps me from having to add them to the cc: when
asking questions like this :)
Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland