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| author | Jeffrey (Sheng-Hui) Chu <jeffchu@broadcom.com> | 2011-11-23 11:33:07 +0100 |
|---|---|---|
| committer | Jean Delvare <khali@endymion.delvare> | 2011-11-23 11:33:07 +0100 |
| commit | cc6bcf7d2ec2234e7b41770185e4dc826390185e (patch) | |
| tree | 930acbf0183df80cc6457d1febe10dae0886f92f | |
| parent | b4bbb02934e4511d9083f15c23e90703482e84ad (diff) | |
| download | linux-cc6bcf7d2ec2234e7b41770185e4dc826390185e.tar.bz2 | |
i2c-algo-bit: Generate correct i2c address sequence for 10-bit target
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>
Cc: stable@kernel.org
Signed-off-by: Jean Delvare <khali@linux-fr.org>
| -rw-r--r-- | drivers/i2c/algos/i2c-algo-bit.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/i2c/algos/i2c-algo-bit.c b/drivers/i2c/algos/i2c-algo-bit.c index 85584a547c25..525c7345fa0b 100644 --- a/drivers/i2c/algos/i2c-algo-bit.c +++ b/drivers/i2c/algos/i2c-algo-bit.c @@ -488,7 +488,7 @@ 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); @@ -498,7 +498,7 @@ static int bit_doAddress(struct i2c_adapter *i2c_adap, struct i2c_msg *msg) return -ENXIO; } /* 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"); |