Eero Nurkkala 71ace555f2 risc-v/mpfs: ihc: fix performance issue
nxsig_usleep() will wait for the next timer tick which is way
too much here. It's not sleeping 100 us, but rather, near 1/60 s.

This causes severe performance problems. Fix this by polling the
register for a while if the remote end is busy.

Signed-off-by: Eero Nurkkala <eero.nurkkala@offcode.fi>
2022-08-26 02:12:26 +08:00
..