Hi,
I've just got the new -proposed kernel with that fix, and got an important
regression: it broke tty connection to my devices using FTDI chips.
I haven't fully checked yet, but I think that's because you've cherry-
picked commit eafbe67f84761d787802e5113d895a316b6292fe "n_tty: Refactor
input_available_p() by call site", without also taking commit
a5934804a834f525c9e6289935ceef65b952b101 "n_tty: Fix poll() when
TIME_CHAR and MIN_CHAR == 0" (which fixes that first commit).
Note: I'm not affected by the original bug, so cannot comment on the
effect of the other commits.
How to reproduce the regression:
? python
> import serial
> p = serial.Serial("/dev/ttyACM0", timeout=1)
> p.read()
SerialException: device reports readiness to read but returned no data (device
disconnected?)
Expected:
p.read() waits one second and returns nothing (due to timeout).
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https://bugs.launchpad.net/bugs/1397976
Title:
tty hangup regression in 3.13 kernel (trusty LTS)
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