4 files changed, 8 insertions, 12 deletions
diff --git a/drivers/gpu/host1x/debug.c b/drivers/gpu/host1x/debug.c
index a18cc8d8caf5..6433c00d5d7e 100644
--- a/drivers/gpu/host1x/debug.c
+++ b/drivers/gpu/host1x/debug.c
@@ -216,12 +216,3 @@ void host1x_debug_dump(struct host1x *host1x)
 
 	show_all(host1x, &o, true);
 }
-
-void host1x_debug_dump_syncpts(struct host1x *host1x)
-{
-	struct output o = {
-		.fn = write_to_printk
-	};
-
-	show_syncpts(host1x, &o, false);
-}
diff --git a/drivers/gpu/host1x/debug.h b/drivers/gpu/host1x/debug.h
index 62bd8a091fa7..c43c61d876a9 100644
--- a/drivers/gpu/host1x/debug.h
+++ b/drivers/gpu/host1x/debug.h
@@ -41,6 +41,5 @@ extern unsigned int host1x_debug_trace_cmdbuf;
 void host1x_debug_init(struct host1x *host1x);
 void host1x_debug_deinit(struct host1x *host1x);
 void host1x_debug_dump(struct host1x *host1x);
-void host1x_debug_dump_syncpts(struct host1x *host1x);
 
 #endif
diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c
index 7b1d091f3c09..1f93e5e276c0 100644
--- a/drivers/gpu/host1x/dev.c
+++ b/drivers/gpu/host1x/dev.c
@@ -361,6 +361,10 @@ static bool host1x_wants_iommu(struct host1x *host1x)
 	return true;
 }
 
+/*
+ * Returns ERR_PTR on failure, NULL if the translation is IDENTITY, otherwise a
+ * valid paging domain.
+ */
 static struct iommu_domain *host1x_iommu_attach(struct host1x *host)
 {
 	struct iommu_domain *domain = iommu_get_domain_for_dev(host->dev);
@@ -385,6 +389,8 @@ static struct iommu_domain *host1x_iommu_attach(struct host1x *host)
 	 * Similarly, if host1x is already attached to an IOMMU (via the DMA
 	 * API), don't try to attach again.
 	 */
+	if (domain && domain->type == IOMMU_DOMAIN_IDENTITY)
+		domain = NULL;
 	if (!host1x_wants_iommu(host) || domain)
 		return domain;
 
@@ -619,6 +625,8 @@ static int host1x_probe(struct platform_device *pdev)
 		goto free_contexts;
 	}
 
+	mutex_init(&host->intr_mutex);
+
 	pm_runtime_enable(&pdev->dev);
 
 	err = devm_tegra_core_dev_init_opp_table_common(&pdev->dev);
diff --git a/drivers/gpu/host1x/intr.c b/drivers/gpu/host1x/intr.c
index b3285dd10180..f77a678949e9 100644
--- a/drivers/gpu/host1x/intr.c
+++ b/drivers/gpu/host1x/intr.c
@@ -104,8 +104,6 @@ int host1x_intr_init(struct host1x *host)
 	unsigned int id;
 	int i, err;
 
-	mutex_init(&host->intr_mutex);
-
 	for (id = 0; id < host1x_syncpt_nb_pts(host); ++id) {
 		struct host1x_syncpt *syncpt = &host->syncpt[id];