On Tue, 02 Feb 2021 01:02:37 +0100, Olivia Mackintosh wrote: > > Like the DJM-750, ensure that the format control message is passed to > the device when opening a stream. It seems as though fmt->sync_ep is not > always set when this function is called hence the passing of the value > at the call site. If this can be fixed, fmt->sync_up should be used as > the wvalue. Could you give your Signed-off-by line? > +static int pioneer_djm_set_format_quirk(struct snd_usb_substream *subs, > + u16 windex) > +{ > + unsigned int cur_rate = subs->data_endpoint->cur_rate; > + u8 sr[3]; > + // Convert to little endian > + sr[0] = cur_rate&0xff; > + sr[1] = (cur_rate>>8)&0xff; > + sr[2] = (cur_rate>>16)&0xff; Better to have some appropriate spaces around operators. Also, instead of open-code, you can use cpu_to_le32() and pass its pointer, too. thanks, Takashi