tree a2ba69532326e0b578283f277c741b4c7de7a21f
parent d1dcd678257603e71cf3f3d84c70e2b6f0f14bb8
author Benjamin Herrenschmidt <benh@kernel.crashing.org> 1529568005 +1000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1532649492 +1000

fsi: Prevent multiple concurrent rescans

The bus scanning process isn't terribly good at parallel attempts
at rescanning the same bus. Let's have a per-master mutex protecting
the scanning process.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>