linux-kernel - [PATCH 0/5] irq: generic-chip: resource management improvements

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Date:   Wed, 31 May 2017 18:06:55 +0200
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <marc.zyngier@....com>,
        Jonathan Corbet <corbet@....net>
Cc:     linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
        Bartosz Golaszewski <brgl@...ev.pl>
Subject: [PATCH 0/5] irq: generic-chip: resource management improvements

This series is a follow-up to [1].

Some users of irq_alloc_generic_chip() are modules which can be
removed (e.g. gpio-ml-ioh) but have no means of freeing the allocated
generic chip.

Last time it was suggested to provide irq_destroy_generic_chip() which
would undo both irq_remove_generic_chip() and irq_alloc_generic_chip().

This functionality is provided by patch 2/5 with 1/5 adding the option
to only free the allocated memory.

Patch 3/5 exports a function that will be used in the devres variant
of irq_alloc_generic_chip().

Patches 4/5 and 5/5 add resource managed versions of
irq_alloc_generic_chip() & irq_setup_generic_chip(). They will be used
in drivers where applicable. Device resources are released in reverse
order so it's ok to call devm_irq_alloc_generic_chip() and then
devm_irq_setup_generic_chip().

[1] https://lkml.org/lkml/2017/3/8/550

Bartosz Golaszewski (5):
  irq: generic-chip: provide irq_free_generic_chip()
  irq: generic-chip: provide irq_destroy_generic_chip()
  irq: generic-chip: export irq_init_generic_chip() locally
  irq: generic-chip: provide devm_irq_alloc_generic_chip()
  irq: generic-chip: provide devm_irq_setup_generic_chip()

 Documentation/driver-model/devres.txt |  2 +
 include/linux/irq.h                   | 22 +++++++++
 kernel/irq/devres.c                   | 86 +++++++++++++++++++++++++++++++++++
 kernel/irq/generic-chip.c             |  7 ++-
 kernel/irq/internals.h                | 11 +++++
 5 files changed, 124 insertions(+), 4 deletions(-)

-- 
2.9.3