linux-kernel - [PATCH] [v3, 1/1] clocksource/drivers/timer-mediatek: optimize systimer irq clear flow on shutdown

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Message-ID: <1617957367-479-1-git-send-email-Fengquan.Chen@mediatek.com>
Date:   Fri, 9 Apr 2021 16:36:06 +0800
From:   Fengquan Chen <Fengquan.Chen@...iatek.com>
To:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Matthias Brugger <matthias.bgg@...il.com>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>
CC:     <fengquan.chen@...iatek.com>, <dehui.sun@...iatek.com>,
        Fengquan Chen <Fengquan.Chen@...iatek.com>
Subject: [PATCH] [v3, 1/1] clocksource/drivers/timer-mediatek: optimize systimer irq clear flow on shutdown

mtk_syst_clkevt_shutdown is called after irq disabled in suspend flow,
clear any pending systimer irq when shutdown to avoid suspend aborted
due to timer irq pending

Also as for systimer in mediatek socs, there must be firstly enable
timer before clear systimer irq

Fixes: e3af677607d9("clocksource/drivers/timer-mediatek: Add support for system timer")
Signed-off-by: Fengquan Chen <fengquan.chen@...iatek.com>

Fengquan Chen (1):
  [v3, 1/1] clocksource/drivers/timer-mediatek: optimize systimer irq
    clear flow on shutdown

 drivers/clocksource/timer-mediatek.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

-- 
1.8.1.1.dirty