diff options
| -rw-r--r-- | drivers/i2c/i2c-slave-eeprom.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/i2c/i2c-slave-eeprom.c b/drivers/i2c/i2c-slave-eeprom.c index 3fb45d894d80..822374654609 100644 --- a/drivers/i2c/i2c-slave-eeprom.c +++ b/drivers/i2c/i2c-slave-eeprom.c @@ -48,12 +48,18 @@ static int i2c_slave_eeprom_slave_cb(struct i2c_client *client, break; case I2C_SLAVE_READ_PROCESSED: + /* The previous byte made it to the bus, get next one */ eeprom->buffer_idx++; /* fallthrough */ case I2C_SLAVE_READ_REQUESTED: spin_lock(&eeprom->buffer_lock); *val = eeprom->buffer[eeprom->buffer_idx]; spin_unlock(&eeprom->buffer_lock); + /* + * Do not increment buffer_idx here, because we don't know if + * this byte will be actually used. Read Linux I2C slave docs + * for details. + */ break; case I2C_SLAVE_STOP: |