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| author | Maxime Chevallier <[email protected]> | 2018-01-17 16:15:25 +0000 |
|---|---|---|
| committer | Mark Brown <[email protected]> | 2018-01-18 10:59:12 +0000 |
| commit | 44a5f423e70374e5b42cecd85e78f2d79334e0f2 (patch) | |
| tree | ac17c518f5357f051350af2833675af9cb913182 /net/unix/af_unix.c | |
| parent | Linux 4.15-rc1 (diff) | |
| download | kernel-44a5f423e70374e5b42cecd85e78f2d79334e0f2.tar.gz kernel-44a5f423e70374e5b42cecd85e78f2d79334e0f2.zip | |
spi: a3700: Clear DATA_OUT when performing a read
When performing a read using FIFO mode, the spi controller shifts out
the last 2 bytes that were written in a previous transfer on MOSI.
This undocumented behaviour can cause devices to misinterpret the
transfer, so we explicitly clear the WFIFO before each read.
This behaviour was noticed on EspressoBin.
Signed-off-by: Maxime Chevallier <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions