linux-kernel - Re: [PATCH 2/2] i2c: Clear client->irq in i2c_device

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Date:   Wed, 31 Oct 2018 23:35:02 +0000
From:   Wolfram Sang <wsa@...-dreams.de>
To:     Charles Keepax <ckeepax@...nsource.cirrus.com>
Cc:     linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
        patches@...nsource.cirrus.com
Subject: Re: [PATCH 2/2] i2c: Clear client->irq in i2c_device_remove

On Fri, Oct 19, 2018 at 09:59:58AM +0100, Charles Keepax wrote:
> The IRQ will be mapped in i2c_device_probe only if client->irq is zero and
> i2c_device_remove does not clear this. When rebinding an I2C device,
> whos IRQ provider has also been rebound this means that an IRQ mapping
> will never be created, causing the I2C device to fail to acquire its
> IRQ. Fix this issue by clearing client->irq in i2c_device_remove,
> forcing i2c_device_probe to lookup the mapping again.
> 
> Signed-off-by: Charles Keepax <ckeepax@...nsource.cirrus.com>

Applied to for-current, thanks!


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