linux-kernel - Re: [PATCH] i2c: imx: add irqf_no

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Message-ID: <Y4k0lVMueLEic75K@shikoro>
Date:   Fri, 2 Dec 2022 00:11:17 +0100
From:   Wolfram Sang <wsa@...nel.org>
To:     Oleksij Rempel <o.rempel@...gutronix.de>
Cc:     Clark Wang <xiaoning.wang@....com>, linux@...pel-privat.de,
        kernel@...gutronix.de, shawnguo@...nel.org, s.hauer@...gutronix.de,
        festevam@...il.com, linux-imx@....com, linux-i2c@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] i2c: imx: add irqf_no_suspend flag

On Wed, Nov 16, 2022 at 10:02:49AM +0100, Oleksij Rempel wrote:
> On Wed, Nov 16, 2022 at 03:44:31PM +0800, Clark Wang wrote:
> > The i2c irq is masked when user starts an i2c transfer process
> > during noirq suspend stage. As a result, i2c transfer fails.
> > To solve the problem, IRQF_NO_SUSPEND is added to i2c bus.
> > 
> > Signed-off-by: Clark Wang <xiaoning.wang@....com>
> 
> Acked-by: Oleksij Rempel <o.rempel@...gutronix.de>

Is this really happening? The driver already implements
master_xfer_atomic, so I'd suspect it gets called instead?


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