Hi Ivan,
It appears that I have found a regression caused by
3a878c430fd6 ("tty: serial: msm: Add TX DMA support").
When I cat a file slightly larger than 126000 bytes on
the console, viewed via minicom connected to the serial
port, I am losing random chunks of data, almost always
three bytes in length. I have also seen a lost chunk
of two bytes.
I am using the 8074 dragonboard, with the dts of
arch/arm/boot/dts/qcom-apq8074-dragonboard.dts.
The dts node is serial@f991e000, which has a
compatible of "qcom,msm-uartdm-v1.4", so is_uartdm
should be UARTDM_1P4.
Do you have any thoughts on what might be going
wrong, or what I can do to debug this?
Thanks,
Frank
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