tree cca7dfc760c45f32bdbd9e6f69106dd24651d468
parent 5cf0c7f6502f26332b46fa87914553a4d6ae75ac
author Alan Tull <atull@kernel.org> 1510777213 -0600
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1511883037 +0100

fpga: mgr: separate getting/locking FPGA manager

Previously when the user gets a FPGA manager, it was locked
and nobody else could use it for programming.

This commit makes it straightforward to save a reference to an
FPGA manager and only lock it when programming the FPGA.

Add functions that get an FPGA manager's mutex for exclusive use:
* fpga_mgr_lock
* fpga_mgr_unlock

The following functions no longer lock an FPGA manager's mutex:
* of_fpga_mgr_get
* fpga_mgr_get
* fpga_mgr_put

Signed-off-by: Alan Tull <atull@kernel.org>
Acked-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>