linux-kernel - Re: [PATCH v2 2/3] i2c: cadence: Set the hardware time-out register to maximum value

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Message-ID: <20141204183015.GI7944@katana>
Date:	Thu, 4 Dec 2014 19:30:15 +0100
From:	Wolfram Sang <wsa@...-dreams.de>
To:	Harini Katakam <harinik@...inx.com>
Cc:	mark.rutland@....com, michal.simek@...inx.com,
	soren.brinkmann@...inx.com, linux-arm-kernel@...ts.infradead.org,
	linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
	vishnum@...inx.com, harinikatakamlinux@...il.com
Subject: Re: [PATCH v2 2/3] i2c: cadence: Set the hardware time-out register
 to maximum value

On Wed, Dec 03, 2014 at 06:05:25PM +0530, Harini Katakam wrote:
> From: Vishnu Motghare <vishnum@...inx.com>
> 
> Cadence I2C controller has bug wherein it generates invalid read transactions
> after timeout in master receiver mode. This driver does not use the HW
> timeout and this interrupt is disabled but the feature itself cannot be
> disabled. Hence, this patch writes the maximum value (0xFF) to this register.
> This is one of the workarounds to this bug and it will not avoid the issue
> completely but reduces the chances of error.
> 
> Signed-off-by: Vishnu Motghare <vishnum@...inx.com>
> Signed-off-by: Harini Katakam <harinik@...inx.com>

Applied to for-current, thanks!


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