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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>
hifive-unleashed-5.1
Jan Glauber 2018-02-27 16:42:13 +01:00 committed by Wolfram Sang
parent 1a0e3a35c6
commit 7c4246797b
2 changed files with 2 additions and 1 deletions
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1
drivers/i2c/busses/i2c-octeon-core.c
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@ -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:

2
drivers/i2c/busses/i2c-octeon-core.h
View File

@ -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