[media] staging: s5p-cec: Use cec_get_drvdata()

Use helper function to get driver private data from CEC
adapter.
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: Kamil Debski <kamil@wypas.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/staging/media/s5p-cec/s5p_cec.c

@@ -37,7 +37,7 @@ MODULE_PARM_DESC(debug, "debug level (0-2)");
 
 static int s5p_cec_adap_enable(struct cec_adapter *adap, bool enable)
 {
-	struct s5p_cec_dev *cec = adap->priv;
+	struct s5p_cec_dev *cec = cec_get_drvdata(adap);
 
 	if (enable) {
 		pm_runtime_get_sync(cec->dev);
@@ -61,7 +61,7 @@ static int s5p_cec_adap_enable(struct cec_adapter *adap, bool enable)
 
 static int s5p_cec_adap_log_addr(struct cec_adapter *adap, u8 addr)
 {
-	struct s5p_cec_dev *cec = adap->priv;
+	struct s5p_cec_dev *cec = cec_get_drvdata(adap);
 
 	s5p_cec_set_addr(cec, addr);
 	return 0;
@@ -70,7 +70,7 @@ static int s5p_cec_adap_log_addr(struct cec_adapter *adap, u8 addr)
 static int s5p_cec_adap_transmit(struct cec_adapter *adap, u8 attempts,
 				 u32 signal_free_time, struct cec_msg *msg)
 {
-	struct s5p_cec_dev *cec = adap->priv;
+	struct s5p_cec_dev *cec = cec_get_drvdata(adap);
 
 	/*
 	 * Unclear if 0 retries are allowed by the hardware, so have 1 as