diff options
| author | Roja Rani Yarubandi | 2021-01-08 20:35:45 +0530 |
|---|---|---|
| committer | Wolfram Sang | 2021-02-01 23:09:34 +0100 |
| commit | e0371298ddc51761be257698554ea507ac8bf831 (patch) | |
| tree | 7de39a0ee069ef70eef6a52603134435597ccc74 /block/bounce.c | |
| parent | e5c02cf541541605f704fbbb9a764e23f88ad0cb (diff) | |
i2c: i2c-qcom-geni: Add shutdown callback for i2c
If the hardware is still accessing memory after SMMU translation
is disabled (as part of smmu shutdown callback), then the
IOVAs (I/O virtual address) which it was using will go on the bus
as the physical addresses which will result in unknown crashes
like NoC/interconnect errors.
So, implement shutdown callback to i2c driver to stop on-going transfer
and unmap DMA mappings during system "reboot" or "shutdown".
Fixes: 37692de5d523 ("i2c: i2c-qcom-geni: Add bus driver for the Qualcomm GENI I2C controller")
Signed-off-by: Roja Rani Yarubandi <rojay@codeaurora.org>
Reviewed-by: Akash Asthana <akashast@codeaurora.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Diffstat (limited to 'block/bounce.c')
0 files changed, 0 insertions, 0 deletions