i2c: hisi: Only use the completion interrupt to finish the transfer

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[ Upstream commit d982635126 ]

The controller will always generate a completion interrupt when the
transfer is finished normally or not. Currently we use either error or
completion interrupt to finish, this may result the completion
interrupt unhandled and corrupt the next transfer, especially at low
speed mode. Since on error case, the error interrupt will come first
then is the completion interrupt. So only use the completion interrupt
to finish the whole transfer process.

Fixes: d62fbdb99a ("i2c: add support for HiSilicon I2C controller")
Reported-by: Sheng Feng <fengsheng5@huawei.com>
Signed-off-by: Sheng Feng <fengsheng5@huawei.com>
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Yicong Yang 2023-03-13 15:45:52 +08:00 • committed by Greg Kroah-Hartman

parent ae7d8ab3af

commit af3de05ecb

1 changed files with 5 additions and 1 deletions

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drivers/i2c/busses/i2c-hisi.c

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