4.18-stable review patch. If anyone has any objections, please let me know.
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From: Jae Hyun Yoo <jae.hyun.yoo@xxxxxxxxxxxxxxx>
[ Upstream commit 517fde0eb5a8f46c54ba6e2c36e32563b23cb14f ]
This patch changes the order of enum aspeed_i2c_master_state and
enum aspeed_i2c_slave_state defines to make their initial value to
ASPEED_I2C_MASTER_INACTIVE and ASPEED_I2C_SLAVE_STOP respectively.
In case of multi-master use, if a slave data comes ahead of the
first master xfer, master_state starts from an invalid state so
this change fixes the issue.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@xxxxxxxxxxxxxxx>
Reviewed-by: Brendan Higgins <brendanhiggins@xxxxxxxxxx>
Signed-off-by: Wolfram Sang <wsa@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/i2c/busses/i2c-aspeed.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/i2c/busses/i2c-aspeed.c
+++ b/drivers/i2c/busses/i2c-aspeed.c
@@ -111,22 +111,22 @@
#define ASPEED_I2CD_DEV_ADDR_MASK GENMASK(6, 0)
enum aspeed_i2c_master_state {
+ ASPEED_I2C_MASTER_INACTIVE,
ASPEED_I2C_MASTER_START,
ASPEED_I2C_MASTER_TX_FIRST,
ASPEED_I2C_MASTER_TX,
ASPEED_I2C_MASTER_RX_FIRST,
ASPEED_I2C_MASTER_RX,
ASPEED_I2C_MASTER_STOP,
- ASPEED_I2C_MASTER_INACTIVE,
};
enum aspeed_i2c_slave_state {
+ ASPEED_I2C_SLAVE_STOP,
ASPEED_I2C_SLAVE_START,
ASPEED_I2C_SLAVE_READ_REQUESTED,
ASPEED_I2C_SLAVE_READ_PROCESSED,
ASPEED_I2C_SLAVE_WRITE_REQUESTED,
ASPEED_I2C_SLAVE_WRITE_RECEIVED,
- ASPEED_I2C_SLAVE_STOP,
};
struct aspeed_i2c_bus {
