linux-kernel - RE: i2c: undefined option I2C_ALGO

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Date:   Thu, 17 Nov 2016 08:40:34 +0000
From:   Shardar Mohammed <smohammed@...dia.com>
To:     Thierry Reding <treding@...dia.com>,
        Valentin Rothberg <valentinrothberg@...il.com>
CC:     LKML <linux-kernel@...r.kernel.org>
Subject: RE: i2c: undefined option I2C_ALGO_BUSCLEAR

> On Wed, Nov 16, 2016 at 04:39:57PM +0100, Thierry Reding wrote:
> > On Wed, Nov 16, 2016 at 08:31:35AM +0100, Valentin Rothberg wrote:
> > > Hi Shardar,
> > >
> > > your commit c3ca951fe41a ("i2c: Add Tegra BPMP I2C proxy driver")
> > > popped up in today's linux-next tree, adding Kconfig option
> > > I2C_TEGRA_BPMP, which further selects I2C_ALGO_BUSCLEAR, which is
> > > nowhere defined in Kconfig.
> > >
> > > Is there a patch queued somewhere to add I2C_ALGO_BUSCLEAR to
> Kconfig?
> > >  I could not find anything on the lkml; only some older repositories
> > > on github, where the options is defined in drivers/i2c/busses/Kconfig.
> >
> > This looks to be something that was part of some downstream kernel a
> > long time ago. Given that it doesn't exist upstream and the driver
> > does not use anything related to it, I'll just drop the select. Thanks
> > for pointing this out.
> 
> Actually the I2C_ALGO_BIT seems to be completely unused as well. I'm going
> to drop that, too.
> 
Yes as Thierry mentioned both I2C_ALGO_BUSCLEAR and I2C_ALGO_BIT can be removed as these are obsolete.