commit 83ee92e168bc5d744f96961254ffac95a6260220
Author: wolfgar <stephan.rafin@laposte.net>
Date:   Sat Sep 13 01:58:08 2014 +0200

    No longer try to get link status directly in this driver
    Only consume the event sent by mxc-hdmi driver

diff --git a/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c b/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c
index f8b3f7a..c30237e 100644
--- a/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c
+++ b/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c
@@ -67,7 +67,6 @@ struct hdmi_cec_priv {
 	u8 msg_len;
 	int tx_answer;
 	u16 latest_cec_stat;
-	u8 link_status;
 	spinlock_t irq_lock;
 	struct delayed_work hdmi_cec_work;
 	struct mutex lock;
@@ -96,7 +95,6 @@ static irqreturn_t mxc_hdmi_cec_isr(int irq, void *data)
 	struct hdmi_cec_priv *hdmi_cec = data;
 	u16 cec_stat = 0;
 	unsigned long flags;
-	u8 phy_stat0;
 	irqreturn_t ret = IRQ_HANDLED;
 
 	spin_lock_irqsave(&hdmi_cec->irq_lock, flags);
@@ -105,7 +103,6 @@ static irqreturn_t mxc_hdmi_cec_isr(int irq, void *data)
 
 	cec_stat = hdmi_readb(HDMI_IH_CEC_STAT0);
 	hdmi_writeb(cec_stat, HDMI_IH_CEC_STAT0);
-	phy_stat0 = hdmi_readb(HDMI_PHY_STAT0) & 0x02;
 
 	if ((cec_stat & (HDMI_IH_CEC_STAT0_ERROR_INIT | \
 		HDMI_IH_CEC_STAT0_NACK | HDMI_IH_CEC_STAT0_EOM | \
@@ -113,14 +110,7 @@ static irqreturn_t mxc_hdmi_cec_isr(int irq, void *data)
 		ret = IRQ_NONE;
 		cec_stat = 0;
 	}
-	if (hdmi_cec->link_status ^ phy_stat0) {
-		/* HPD value changed */
-		hdmi_cec->link_status = phy_stat0;
-		if (hdmi_cec->link_status)
-			cec_stat |= 0x80; /* Connected */
-		else
-			cec_stat |= 0x100; /* Disconnected */
-	}
+
 	pr_debug("HDMI CEC interrupt received\n");
 	hdmi_cec->latest_cec_stat = cec_stat ;
 
@@ -357,7 +347,6 @@ static ssize_t hdmi_cec_write(struct file *file, const char __user *buf,
 	return ret;
 }
 
-
 void hdmi_cec_start_device(void)
 {
 	u8 val;
@@ -373,7 +362,6 @@ void hdmi_cec_start_device(void)
 	val = HDMI_IH_CEC_STAT0_WAKEUP | HDMI_IH_CEC_STAT0_ERROR_FOLL | HDMI_IH_CEC_STAT0_ARB_LOST;
 	hdmi_writeb(val, HDMI_CEC_MASK);
 	hdmi_writeb(val, HDMI_IH_MUTE_CEC_STAT0);
-	hdmi_cec_data.link_status = hdmi_readb(HDMI_PHY_STAT0) & 0x02;
 	hdmi_cec_data.cec_state = true;
 }
 EXPORT_SYMBOL(hdmi_cec_start_device);