gpu: host1x: Free the IOMMU domain when there is no device to attach
authorPaul Kocialkowski <contact@paulk.fr>
Mon, 10 Jul 2017 19:33:05 +0000 (21:33 +0200)
committerThierry Reding <treding@nvidia.com>
Thu, 27 Jul 2017 14:57:34 +0000 (16:57 +0200)
commitfea20995976f4b2e8968f852a18e280487d42f0d
treeaf175c1f7eb513ee3e9e626cf19162d6d7561c2f
parentb9670ca20abcdd1587c15f8cf2d39edce5d2f37d
gpu: host1x: Free the IOMMU domain when there is no device to attach

When there is no device to attach to the IOMMU domain, as may be the
case when the device-tree does not contain the proper iommu node, it is
best to keep going without IOMMU support rather than failing.
This allows the driver to probe and function instead of taking down
all of the tegra drm driver, leading to missing display support.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Fixes: 404bfb78daf3 ("gpu: host1x: Add IOMMU support")
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170710193305.5987-1-contact@paulk.fr
drivers/gpu/host1x/dev.c