linux-kernel - [PATCH 0/3] Fix IRQ storm with GPIO interrupts

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Date:   Mon, 18 Sep 2023 13:24:08 +0100
From:   Biju Das <biju.das.jz@...renesas.com>
To:     Thomas Gleixner <tglx@...utronix.de>, Marc Zyngier <maz@...nel.org>
Cc:     Biju Das <biju.das.jz@...renesas.com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        Claudiu Beznea <claudiu.beznea.uj@...renesas.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Biju Das <biju.das.au@...il.com>, linux-kernel@...r.kernel.org,
        linux-renesas-soc@...r.kernel.org
Subject: [PATCH 0/3] Fix IRQ storm with GPIO interrupts

The following issues observed while adding IRQ support for RTC.
 * The irq_disable is not clearing interrupt source properly.
 * The driver is not following as per hardware manual for changing
   interrupt settings.
 * IRQ storm due to phantum interrupt, when we select the TINT source.
   Here IRQ handler disables  the interrupts using disable_irq_nosync()
   and scheduling a work queue and in the work queue, re-enabling the
   interrupt with enable_irq().

Biju Das (3):
  irqchip: renesas-rzg2l: Fix logic to clear TINT interrupt source
  irqchip: renesas-rzg2l: Mask interrupts for changing interrupt
    settings
  irqchip: renesas-rzg2l: Fix irq storm with edge trigger detection for
    TINT

 drivers/irqchip/irq-renesas-rzg2l.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

-- 
2.25.1