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[bluetooth-dev] UPPER_FLOW_CONTROL

If the driver runs out of buffer space it prints the message WARNING, no
space left in biffer, no data will be sent.  It looks to me like ppp
doesn't check the write_room before doing a write, so it keeps trying
to write.  However, the send returns 0 bytes written and ppp operates

It seems to me this error message is then harmless and can be downgraded
from a DSYS.  Is this correct?

Mark Douglas Corner