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| author | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-02-14 22:47:57 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-02-23 19:44:35 +0300 |
| commit | 6cf921be8fb98351b4b394d5c03a5ff718a0e679 (patch) | |
| tree | fa0d5dc292d5a335e9a543a1b2a058926d140a9b /lib/memory-notifier-error-inject.c | |
| parent | 166a2464cdcf20d4809cc8bb4004241816393a7f (diff) | |
| download | linux-6cf921be8fb98351b4b394d5c03a5ff718a0e679.tar.xz | |
siano: make it work again with CONFIG_VMAP_STACK
commit f9c85ee67164b37f9296eab3b754e543e4e96a1c upstream.
Reported as a Kaffeine bug:
https://bugs.kde.org/show_bug.cgi?id=375811
The USB control messages require DMA to work. We cannot pass
a stack-allocated buffer, as it is not warranted that the
stack would be into a DMA enabled area.
On Kernel 4.9, the default is to not accept DMA on stack anymore
on x86 architecture. On other architectures, this has been a
requirement since Kernel 2.2. So, after this patch, this driver
should likely work fine on all archs.
Tested with USB ID 2040:5510: Hauppauge Windham
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/memory-notifier-error-inject.c')
0 files changed, 0 insertions, 0 deletions