i2c: octeon: Prevent error message on bus error

The error message: [Fri Feb 16 13:42:13 2018] i2c-thunderx 0000:01:09.4: unhandled state: 0 is mis-leading as state 0 (bus error) is not an unknown state. Return -EIO as before but avoid printing the message. Also rename STAT_ERROR to STATE_BUS_ERROR. Signed-off-by: Jan Glauber <jglauber@cavium.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
mariux64 · Mar 2, 2018 · 7c42467 · 7c42467
1 parent 1a0e3a3
commit 7c42467
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Showing 2 changed files with 2 additions and 1 deletion.
diff --git a/drivers/i2c/busses/i2c-octeon-core.c b/drivers/i2c/busses/i2c-octeon-core.c
@@ -233,6 +233,7 @@ static int octeon_i2c_check_status(struct octeon_i2c *i2c, int final_read)
 		return -EOPNOTSUPP;
 
 	case STAT_TXDATA_NAK:
+	case STAT_BUS_ERROR:
 		return -EIO;
 	case STAT_TXADDR_NAK:
 	case STAT_RXADDR_NAK:

diff --git a/drivers/i2c/busses/i2c-octeon-core.h b/drivers/i2c/busses/i2c-octeon-core.h
@@ -43,7 +43,7 @@
 #define TWSI_CTL_AAK		0x04	/* Assert ACK */
 
 /* Status values */
-#define STAT_ERROR		0x00
+#define STAT_BUS_ERROR		0x00
 #define STAT_START		0x08
 #define STAT_REP_START		0x10
 #define STAT_TXADDR_ACK		0x18