i2c-algo-bit: Generate correct i2c address sequence for 10-bit target

commit cc6bcf7d2ec2234e7b41770185e4dc826390185e upstream.

The wrong bits were put on the wire, fix that.

This fixes kernel bug #42562.

Signed-off-by: Sheng-Hui J. Chu <jeffchu@broadcom.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

diff --git a/drivers/i2c/algos/i2c-algo-bit.c b/drivers/i2c/algos/i2c-algo-bit.c
index a39e6cff86e7ad8d64b5b786e7b5452f9290a458..4e1a3327ce90ee8d59087bd642decd5d1c0e0380 100644 (file)
--- a/drivers/i2c/algos/i2c-algo-bit.c
+++ b/drivers/i2c/algos/i2c-algo-bit.c
@@ -470,7 +470,7 @@ static int bit_doAddress(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
 
        if (flags & I2C_M_TEN) {
                /* a ten bit address */
-               addr = 0xf0 | ((msg->addr >> 7) & 0x03);
+               addr = 0xf0 | ((msg->addr >> 7) & 0x06);
                bit_dbg(2, &i2c_adap->dev, "addr0: %d\n", addr);
                /* try extended address code...*/
                ret = try_address(i2c_adap, addr, retries);
@@ -480,7 +480,7 @@ static int bit_doAddress(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
                        return -EREMOTEIO;
                }
                /* the remaining 8 bit address */
-               ret = i2c_outb(i2c_adap, msg->addr & 0x7f);
+               ret = i2c_outb(i2c_adap, msg->addr & 0xff);
                if ((ret != 1) && !nak_ok) {
                        /* the chip did not ack / xmission error occurred */
                        dev_err(&i2c_adap->dev, "died at 2nd address code\n");