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Signed-off-by: Tanmay Jagdale Co-developed-by: Paul Cercueil Signed-off-by: Paul Cercueil --- drivers/i2c/busses/i2c-octeon-core.c | 27 ++++++++++++++------------- 1 file changed, 14 insertions(+), 13 deletions(-) diff --git a/drivers/i2c/busses/i2c-octeon-core.c b/drivers/i2c/busses/i2c-octeon-core.c index 93a49e4637ec..9f72ec1feaa0 100644 --- a/drivers/i2c/busses/i2c-octeon-core.c +++ b/drivers/i2c/busses/i2c-octeon-core.c @@ -205,6 +205,17 @@ static int octeon_i2c_hlc_wait(struct octeon_i2c *i2c) return 0; } +static int octeon_i2c_recovery(struct octeon_i2c *i2c) +{ + int ret; + + ret = i2c_recover_bus(&i2c->adap); + if (ret) + /* recover failed, try hardware re-init */ + ret = octeon_i2c_init_lowlevel(i2c); + return ret; +} + static int octeon_i2c_check_status(struct octeon_i2c *i2c, int final_read) { u8 stat; @@ -265,8 +276,9 @@ 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_BUS_ERROR: + return octeon_i2c_recovery(i2c) ? -EIO : -EAGAIN; case STAT_TXADDR_NAK: case STAT_RXADDR_NAK: case STAT_AD2W_NAK: @@ -277,24 +289,13 @@ static int octeon_i2c_check_status(struct octeon_i2c *i2c, int final_read) /* Set BUS_MON_RST to reset bus monitor */ mode |= BUS_MON_RST_MASK; octeon_i2c_writeq_flush(mode, i2c->twsi_base + OCTEON_REG_MODE(i2c)); - return -EIO; + return octeon_i2c_recovery(i2c) ? -EIO : -EAGAIN; default: dev_err(i2c->dev, "unhandled state: %d\n", stat); return -EIO; } } -static int octeon_i2c_recovery(struct octeon_i2c *i2c) -{ - int ret; - - ret = i2c_recover_bus(&i2c->adap); - if (ret) - /* recover failed, try hardware re-init */ - ret = octeon_i2c_init_lowlevel(i2c); - return ret; -} - /** * octeon_i2c_start - send START to the bus * @i2c: The struct octeon_i2c -- 2.47.3