gpu: nvgpu: Get host1x device from DTS

Currently the gpu driver assumes that the GPU is a child of host1x.
This is an invalid assumption and therefore we need to get the host1x
device from device tree based on nvidia,host1x property.

Bug 1311528
Bug 1434573

Change-Id: I097e39369aaa15ab6652cd23f353f88f7c2b9c48
Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Reviewed-on: http://git-master/r/395664
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c b/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
index 8122d213..55ee5181 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
@@ -343,8 +343,8 @@ gk20a_channel_syncpt_create(struct channel_gk20a *c)
                 return NULL;
 
         sp->c = c;
-        sp->host1x_pdev = to_platform_device(c->g->dev->dev.parent);
-        sp->id = nvhost_get_syncpt_host_managed(c->g->dev, c->hw_chid);
+        sp->host1x_pdev = c->g->host1x_dev;
+        sp->id = nvhost_get_syncpt_host_managed(sp->host1x_pdev, c->hw_chid);
 
         sp->ops.wait_cpu                = gk20a_channel_syncpt_wait_cpu;
         sp->ops.is_expired              = gk20a_channel_syncpt_is_expired;