linux-kernel - Re: [PATCH 1/2] firmware: imx: make sure MU irq can wake up system from suspend mode

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Date:   Wed, 17 Jun 2020 21:48:14 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Anson Huang <Anson.Huang@....com>
Cc:     s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
        ben.dooks@...ethink.co.uk, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Linux-imx@....com
Subject: Re: [PATCH 1/2] firmware: imx: make sure MU irq can wake up system
 from suspend mode

On Fri, Apr 24, 2020 at 07:07:10AM +0800, Anson Huang wrote:
> IRQF_NO_SUSPEND flag is set for MU IRQ of IPC work, but with this
> flag set, IRQD_WAKEUP_ARMED flag will NOT be set during
> suspend_device_irq() phase, then when MU IRQ arrives, it will NOT
> wake up system from suspend.
> 
> To fix this issue, pm_system_wakeup() is called in general MU IRQ
> handler to make sure system can be waked up when MU IRQ arrives.
> 
> Signed-off-by: Anson Huang <Anson.Huang@....com>

I see you guys haven't got agreement on patch #2, so applied #1 only.

Shawn