linux-kernel - Re: [PATCH] i2c: at91: ensure state is restored after suspending

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Message-ID: <20170130174403.GA3282@tetsubishi>
Date:   Mon, 30 Jan 2017 18:44:04 +0100
From:   Wolfram Sang <wsa@...-dreams.de>
To:     Alexandre Belloni <alexandre.belloni@...e-electrons.com>
Cc:     Ludovic Desroches <ludovic.desroches@...el.com>,
        linux-i2c@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] i2c: at91: ensure state is restored after suspending


> +	at91_init_twi_bus(twi_dev);

Can't this function reinit the registers to the needed values? I am not
convinced that a cache will always reflect the proper state after
resume.


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