linux-kernel - [RFC PATCH 0/1] fpga: bridge improve protection against low-level control module unloading

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Date: Tue,  6 Feb 2024 11:56:43 +0100
From: Marco Pagani <marpagan@...hat.com>
To: Moritz Fischer <mdf@...nel.org>,
	Wu Hao <hao.wu@...el.com>,
	Xu Yilun <yilun.xu@...el.com>,
	Tom Rix <trix@...hat.com>,
	Jonathan Corbet <corbet@....net>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Alan Tull <atull@...nsource.altera.com>
Cc: Marco Pagani <marpagan@...hat.com>,
	linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org,
	linux-fpga@...r.kernel.org
Subject: [RFC PATCH 0/1] fpga: bridge improve protection against low-level control module unloading

This RFC proposes a solution to keep protecting the fpga bridge against
the unloading of the low-level control modules while addressing the
limitations of the current implementation. Currently, the code assumes
that the low-level module registers a driver for the parent device that
is later used to take the module's refcount. This proposal removes this
limitation by adding a module owner field to the fpga_bridge struct that
can be set while registering the bridge.

The RFC patch is based on top of ("fpga: remove redundant checks for
bridge ops").

https://lore.kernel.org/linux-fpga/20240201155713.82898-1-marpagan@redhat.com/

Marco Pagani (1):
  fpga: bridge: improve protection against low-level control module
    unloading

 Documentation/driver-api/fpga/fpga-bridge.rst |  7 ++-
 drivers/fpga/fpga-bridge.c                    | 61 +++++++++++--------
 include/linux/fpga/fpga-bridge.h              | 10 ++-
 3 files changed, 47 insertions(+), 31 deletions(-)

-- 
2.43.0