On Mon, May 14, 2018 at 01:34:27PM +0300, Dmitry Osipenko wrote: > On 14.05.2018 13:13, Thierry Reding wrote: > > From: Thierry Reding <[email protected]> > > > > The IOVA API uses a memory cache to allocate IOVA nodes from. To make > > sure that this cache is available, obtain a reference to it and release > > the reference when the cache is no longer needed. > > > > On 64-bit ARM this is hidden by the fact that the DMA mapping API gets > > that reference and never releases it. On 32-bit ARM, this is papered > > over by the Tegra DRM driver (the sole user of the host1x API requiring > > the cache) acquiring a reference to the IOVA cache for its own purposes. > > However, there may be additional users of this API in the future, so fix > > this upfront to avoid surprises. > > > > Fixes: 404bfb78daf3 ("gpu: host1x: Add IOMMU support") > > Signed-off-by: Thierry Reding <[email protected]> > > --- > > drivers/gpu/host1x/dev.c | 11 ++++++++++- > > 1 file changed, 10 insertions(+), 1 deletion(-)
Applied, thanks. Thierry
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