[PATCH 2/5] i2c-bfin-twi: add debug output for error status

[Mike Frysinger]

From: Michael Hennerich <michael.hennerich@xxxxxxxxxx>

Add some debug() code to decode the error register.

Signed-off-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
Signed-off-by: Mike Frysinger <vapier@xxxxxxxxxx>
---
 drivers/i2c/busses/i2c-bfin-twi.c |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/drivers/i2c/busses/i2c-bfin-twi.c b/drivers/i2c/busses/i2c-bfin-twi.c
index e016b1b..758bb1f 100644
--- a/drivers/i2c/busses/i2c-bfin-twi.c
+++ b/drivers/i2c/busses/i2c-bfin-twi.c
@@ -156,6 +156,18 @@ static void bfin_twi_handle_interrupt(struct bfin_twi_iface *iface)
 		write_MASTER_CTL(iface, 0);
 		SSYNC();
 		iface->result = -EIO;
+
+		if (mast_stat & LOSTARB)
+			dev_dbg(&iface->adap.dev, "Lost Arbitration\n");
+		if (mast_stat & ANAK)
+			dev_dbg(&iface->adap.dev, "Address Not Acknowledged\n");
+		if (mast_stat & DNAK)
+			dev_dbg(&iface->adap.dev, "Data Not Acknowledged\n");
+		if (mast_stat & BUFRDERR)
+			dev_dbg(&iface->adap.dev, "Buffer Read Error\n");
+		if (mast_stat & BUFWRERR)
+			dev_dbg(&iface->adap.dev, "Buffer Write Error\n");
+
 		/* if both err and complete int stats are set, return proper
 		 * results.
 		 */
-- 
1.7.0.2

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