From: addy ke <addy.ke@rock-chips.com>
Date: Fri, 8 Aug 2014 09:41:40 +0000 (+0800)
Subject: i2c: rk3x: fix interrupt handling issue
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~107^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9c5f7cad3acc69ce623d04d646950183a759949e;p=pandora-kernel.git

i2c: rk3x: fix interrupt handling issue

If slave holds scl, I2C_IPD[7] will be set 1 by controller
for debugging. Driver must ignore it.

[    5.752391] rk3x-i2c ff160000.i2c: unexpected irq in WRITE: 0x80
[    5.939027] rk3x-i2c ff160000.i2c: timeout, ipd: 0x80, state: 4

Signed-off-by: Addy Ke <addy.ke@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org
---

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