In multi-master environment, this driver side master cannot know exactly when peer master sends data to this side master so a case can be happened that this master tries to send data through the master_xfer function but slave data from peer master is still being processed by this driver. To prevent state corruption in the case, this patch adds checking if any slave operation is ongoing and it wait up to the timeout duration before starting a master_xfer operation. Please review this patch set. Thanks, -Jae Jae Hyun Yoo (2): dt-bindings: i2c: aspeed: Add 'idle-wait-timeout-ms' setting i2c: aspeed: Add bus idle waiting logic for multi-master use cases .../devicetree/bindings/i2c/i2c-aspeed.txt | 10 ++- drivers/i2c/busses/i2c-aspeed.c | 70 +++++++++++++++---- 2 files changed, 62 insertions(+), 18 deletions(-) -- 2.18.0
