[arm-allstar] Interrupted system call warnings

[Stephen - K1LNX]

Good morning,
      I just recently installed a new Pi/URI-X with 1.5 for a simplex node.
Everything appears to be working fine, but I am seeing these messages in
the Asterisk console periodically:

[May  5 06:40:12] WARNING[413]: chan_simpleusb.c:1329 hidthread: select
failed: Interrupted system call

It may be nothing, but I've not seen these messages in the past and I am
curious as to what it is and if it's anything to be concerned with?

Stephen
K1LNX