linux-kernel - Re: [PATCH 2/4] i2c: stm32f7: recover the bus on access timeout

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Message-ID: <20211129123302.GB486850@gnbcxd0016.gnb.st.com>
Date:   Mon, 29 Nov 2021 13:33:02 +0100
From:   Alain Volmat <alain.volmat@...s.st.com>
To:     Wolfram Sang <wsa@...nel.org>, <pierre-yves.mordret@...s.st.com>,
        <alexandre.torgue@...s.st.com>, <linux-i2c@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <fabrice.gasnier@...s.st.com>,
        <amelie.delaunay@...s.st.com>
Subject: Re: [PATCH 2/4] i2c: stm32f7: recover the bus on access timeout

Hi Wolfram

On Mon, Nov 29, 2021 at 01:17:21PM +0100, Wolfram Sang wrote:
> 
> > +		stm32f7_i2c_wait_free_bus(i2c_dev);
> 
> This does only a controller reset, not a bus recovery with 9 toggling
> pulses, or?

indeed. I might better rework this and at the same time introduce the
bus recovery mechanism via the bus recovery callback in this driver.
Please don't merge this patch and I will rework that.