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path: root/drivers/gpu/drm/tegra/drm.c
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Diffstat (limited to 'drivers/gpu/drm/tegra/drm.c')
-rw-r--r--drivers/gpu/drm/tegra/drm.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index 2e7da2a7505d..dc04ce329be3 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -10,6 +10,7 @@
#include <linux/iommu.h>
#include <linux/module.h>
#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
#include <drm/drm_aperture.h>
#include <drm/drm_atomic.h>
@@ -116,6 +117,7 @@ static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp)
static void tegra_drm_context_free(struct tegra_drm_context *context)
{
context->client->ops->close_channel(context);
+ pm_runtime_put(context->client->base.dev);
kfree(context);
}
@@ -427,13 +429,20 @@ static int tegra_client_open(struct tegra_drm_file *fpriv,
{
int err;
+ err = pm_runtime_resume_and_get(client->base.dev);
+ if (err)
+ return err;
+
err = client->ops->open_channel(client, context);
- if (err < 0)
+ if (err < 0) {
+ pm_runtime_put(client->base.dev);
return err;
+ }
err = idr_alloc(&fpriv->legacy_contexts, context, 1, 0, GFP_KERNEL);
if (err < 0) {
client->ops->close_channel(context);
+ pm_runtime_put(client->base.dev);
return err;
}