linux-kernel - [PATCH v2 0/4] pinctrl: rockchip: PREEMPT_RT

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Date:   Wed, 15 Mar 2017 17:46:50 +0000
From:   John Keeping <john@...anate.com>
To:     Heiko Stuebner <heiko@...ech.de>
Cc:     Julia Cartwright <julia@...com>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-gpio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        John Keeping <john@...anate.com>
Subject: [PATCH v2 0/4] pinctrl: rockchip: PREEMPT_RT_FULL fixes

This is an updated version of [1] rebased on top of pinctrl/for-next.
The only change is in patch 1 to remove locking in the new
rockchip_set_schmitt() function.

The aim of the series is to make the Rockchip pinctrl irq_chip
implementation safe for use with RT_FULL which requires that raw
spinlocks are used to avoid sleeping in hardirq context.

[1] https://www.spinics.net/lists/arm-kernel/msg568279.html

John Keeping (4):
  pinctrl: rockchip: remove unnecessary locking
  pinctrl: rockchip: convert to raw spinlock
  pinctrl: rockchip: split out verification of mux settings
  pinctrl: rockchip: avoid hardirq-unsafe functions in irq_chip

 drivers/pinctrl/pinctrl-rockchip.c | 148 ++++++++++++++++++++++---------------
 1 file changed, 87 insertions(+), 61 deletions(-)

-- 
2.12.0.377.gf910686b23.dirty