drm/i2c: tda998x: check the CEC device creation

This patch checks if the CEC device is well created at intialization
time.

Tested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c
index e62082654e010a442a2c621db8485f30a0e6fe14..c37180abcc4b8e2d57dee9971c28607c161d5be5 100644 (file)
--- a/drivers/gpu/drm/i2c/tda998x_drv.c
+++ b/drivers/gpu/drm/i2c/tda998x_drv.c
@@ -1144,6 +1144,8 @@ tda998x_encoder_init(struct i2c_client *client,
 
        priv->current_page = 0;
        priv->cec = i2c_new_dummy(client->adapter, 0x34);
+       if (!priv->cec)
+               return -ENODEV;
        priv->dpms = DRM_MODE_DPMS_OFF;
 
        encoder_slave->slave_priv = priv;