i2c: designware: Get right data length

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IC_DATA_CMD[11] indicates the first data byte received after the address
phase for receive transfer in Master receiver or Slave receiver mode,
this bit was set in some transfer flow. IC_DATA_CMD[7:0] contains the
data to be transmitted or received on the I2C bus, so we should use the
lower 8 bits to get the real data length.

Signed-off-by: Liguang Zhang <zhangliguang@linux.alibaba.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

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Liguang Zhang 2021-02-25 22:26:31 +08:00 • committed by Wolfram Sang

parent a1858ce0cf

commit f53f15ba5a

2 changed files with 3 additions and 1 deletions

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drivers/i2c/busses/i2c-designware-core.h

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2

drivers/i2c/busses/i2c-designware-master.c

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