5 files changed, 27 insertions, 0 deletions
diff --git a/drivers/video/omap2/dss/dpi.c b/drivers/video/omap2/dss/dpi.c
index f053b180ecd7..046ce0806e14 100644
--- a/drivers/video/omap2/dss/dpi.c
+++ b/drivers/video/omap2/dss/dpi.c
@@ -176,6 +176,11 @@ int omapdss_dpi_display_enable(struct omap_dss_device *dssdev)
 {
 	int r;
 
+	if (dssdev->manager == NULL) {
+		DSSERR("failed to enable display: no manager\n");
+		return -ENODEV;
+	}
+
 	r = omap_dss_start_device(dssdev);
 	if (r) {
 		DSSERR("failed to start device\n");
diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c
index 7adbbeb84334..12da2fbd7931 100644
--- a/drivers/video/omap2/dss/dsi.c
+++ b/drivers/video/omap2/dss/dsi.c
@@ -4211,6 +4211,12 @@ int omapdss_dsi_display_enable(struct omap_dss_device *dssdev)
 
 	mutex_lock(&dsi->lock);
 
+	if (dssdev->manager == NULL) {
+		DSSERR("failed to enable display: no manager\n");
+		r = -ENODEV;
+		goto err_start_dev;
+	}
+
 	r = omap_dss_start_device(dssdev);
 	if (r) {
 		DSSERR("failed to start device\n");
diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c
index 256f27a9064a..376732339efe 100644
--- a/drivers/video/omap2/dss/hdmi.c
+++ b/drivers/video/omap2/dss/hdmi.c
@@ -1231,6 +1231,12 @@ int omapdss_hdmi_display_enable(struct omap_dss_device *dssdev)
 
 	mutex_lock(&hdmi.lock);
 
+	if (dssdev->manager == NULL) {
+		DSSERR("failed to enable display: no manager\n");
+		r = -ENODEV;
+		goto err0;
+	}
+
 	r = omap_dss_start_device(dssdev);
 	if (r) {
 		DSSERR("failed to start device\n");
diff --git a/drivers/video/omap2/dss/rfbi.c b/drivers/video/omap2/dss/rfbi.c
index 39f4c597026a..1bb8ce11f6bc 100644
--- a/drivers/video/omap2/dss/rfbi.c
+++ b/drivers/video/omap2/dss/rfbi.c
@@ -860,6 +860,11 @@ int omapdss_rfbi_display_enable(struct omap_dss_device *dssdev)
 {
 	int r;
 
+	if (dssdev->manager == NULL) {
+		DSSERR("failed to enable display: no manager\n");
+		return -ENODEV;
+	}
+
 	r = rfbi_runtime_get();
 	if (r)
 		return r;
diff --git a/drivers/video/omap2/dss/sdi.c b/drivers/video/omap2/dss/sdi.c
index 3a688c871a45..df2b3c3658a2 100644
--- a/drivers/video/omap2/dss/sdi.c
+++ b/drivers/video/omap2/dss/sdi.c
@@ -55,6 +55,11 @@ int omapdss_sdi_display_enable(struct omap_dss_device *dssdev)
 	unsigned long pck;
 	int r;
 
+	if (dssdev->manager == NULL) {
+		DSSERR("failed to enable display: no manager\n");
+		return -ENODEV;
+	}
+
 	r = omap_dss_start_device(dssdev);
 	if (r) {
 		DSSERR("failed to start device\n");