From: Ludovic Desroches <ludovic.desroches@xxxxxxxxx> If the i2c message length is zero, i2c-at91 will directly return an error instead of trying to send a zero-length message. Signed-off-by: Ludovic Desroches <ludovic.desroches@xxxxxxxxx> --- fix for 3.7 drivers/i2c/busses/i2c-at91.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c index aa59a25..eaddc77 100644 --- a/drivers/i2c/busses/i2c-at91.c +++ b/drivers/i2c/busses/i2c-at91.c @@ -263,6 +263,9 @@ static int at91_twi_xfer(struct i2c_adapter *adap, struct i2c_msg *msg, int num) unsigned int_addr_flag = 0; struct i2c_msg *m_start = msg; + if (!msg->len) + return -EINVAL; + dev_dbg(&adap->dev, "at91_xfer: processing %d messages:\n", num); /* -- 1.7.11.3 -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
