linux-kernel - [PATCH 3/7 v1] i2c-eg20t: Fix 10bit access issue

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Message-Id: <1317884192-10694-3-git-send-email-tomoya-linux@dsn.lapis-semi.com>
Date:	Thu,  6 Oct 2011 15:56:27 +0900
From:	Tomoya MORINAGA <tomoya-linux@....lapis-semi.com>
To:	Jean Delvare <khali@...ux-fr.org>, Ben Dooks <ben-linux@...ff.org>,
	Wolfram Sang <w.sang@...gutronix.de>,
	Qi Wang <qi.wang@...el.com>,
	Linus Walleij <linus.walleij@...ricsson.com>,
	linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	yong.y.wang@...el.com, joel.clark@...el.com,
	kok.howg.ewe@...el.com,
	Tomoya MORINAGA <tomoya-linux@....lapis-semi.com>
Subject: [PATCH 3/7 v1] i2c-eg20t: Fix 10bit access issue

Reported-by: Jeffrey (Sheng-Hui) Chu <jeffchu@...adcom.com>
Signed-off-by: Tomoya MORINAGA <tomoya-linux@....lapis-semi.com>
---
 drivers/i2c/busses/i2c-eg20t.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/drivers/i2c/busses/i2c-eg20t.c b/drivers/i2c/busses/i2c-eg20t.c
index c5b9924..aa1705e 100644
--- a/drivers/i2c/busses/i2c-eg20t.c
+++ b/drivers/i2c/busses/i2c-eg20t.c
@@ -410,7 +410,7 @@ static s32 pch_i2c_writebytes(struct i2c_adapter *i2c_adap,
 	}
 
 	if (msgs->flags & I2C_M_TEN) {
-		addr_2_msb = ((addr & I2C_MSB_2B_MSK) >> 7);
+		addr_2_msb = ((addr & I2C_MSB_2B_MSK) >> 7) & 0x06;
 		iowrite32(addr_2_msb | TEN_BIT_ADDR_MASK, p + PCH_I2CDR);
 		if (first)
 			pch_i2c_start(adap);
@@ -515,7 +515,6 @@ static s32 pch_i2c_readbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs,
 	if (msgs->flags & I2C_M_TEN) {
 		addr_2_msb = (((addr & I2C_MSB_2B_MSK) >> 7) | (I2C_RD));
 		iowrite32(addr_2_msb | TEN_BIT_ADDR_MASK, p + PCH_I2CDR);
-
 	} else {
 		/* 7 address bits + R/W bit */
 		addr = (((addr) << 1) | (I2C_RD));
-- 
1.7.4.4

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