linux-kernel - Re: [PATCH V3 1/2] i2c-designware: Add i2c bus locking support

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Date:	Tue, 13 Jan 2015 10:48:33 +0100
From:	Wolfram Sang <wsa@...-dreams.de>
To:	"David E. Box" <david.e.box@...ux.intel.com>
Cc:	Jarkko Nikula <jarkko.nikula@...ux.intel.com>, jdelvare@...e.de,
	arnd@...db.de, maxime.ripard@...e-electrons.com,
	dianders@...omium.org, u.kleine-koenig@...gutronix.de,
	laurent.pinchart+renesas@...asonboard.com,
	boris.brezillon@...e-electrons.com, andrew@...n.ch,
	sjg@...omium.org, markus.mayer@...aro.org,
	jacob.jun.pan@...ux.intel.com, max.schwarz@...ine.de,
	mika.westerberg@...ux.intel.com, skuribay@...ox.com,
	Romain.Baeriswyl@...lis.com, wenkai.du@...el.com,
	chiau.ee.chew@...el.com, alan@...ux.intel.com,
	linux-kernel@...r.kernel.org, linux-i2c@...r.kernel.org
Subject: Re: [PATCH V3 1/2] i2c-designware: Add i2c bus locking support

Hi Dave,

> Timely reply. Around i2c_dw_init(), yes. I just discovered this as the source
> of a recent hang that's occuring in the loop in __i2c_dw_enable().
> The hange occurs very infrequently and only, so far, when not built in. A
> block around i2c_dw_disable_int() would make sense as well as a precaution.

Any news on this or on a V4 of this series?

Thanks,

   Wolfram


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