You are right. I am very sorry for my mistake and I will send another patch fix this.
> Is the first chunk of your patch really necessary?
> `msg[0].len < 2` includes the `msg[0].len == 0` case,
> so the `msg.buf == NULL && msg.len == 0` case is (seemed to me)
> safely ejected as it is.
>
>> --- a/drivers/media/usb/dvb-usb-v2/gl861.c
>> +++ b/drivers/media/usb/dvb-usb-v2/gl861.c
>> @@ -97,7 +97,7 @@ static int gl861_i2c_master_xfer(struct i2c_adapt
>>
>> er *adap, struct i2c_msg msg[],
>> /* XXX: I2C adapter maximum data lengths are not tested */
>> if (num == 1 && !(msg[0].flags & I2C_M_RD)) {
>> /* I2C write */
>> - if (msg[0].len < 2 || msg[0].len > sizeof(ctx->buf)) {
>> + if (msg[0].len == 0 || msg[0].len > sizeof(ctx->buf)) {
>> ret = -EOPNOTSUPP;
>> goto err;
>> }
>
> regards,
> akihiro
>
