On Mon, Jan 22, 2018 at 03:58:47PM +0800, Ji-Ze Hong (Peter Hong) wrote: > Fix Fintek F81232 bulk_in/out size to 64/16 according to the spec. > http://html.alldatasheet.com/html-pdf/406315/FINTEK/F81232/1762/8/F81232.html > > Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_ker...@gmail.com> > --- > drivers/usb/serial/f81232.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c > index a054f69446fd..f3ee537d643c 100644 > --- a/drivers/usb/serial/f81232.c > +++ b/drivers/usb/serial/f81232.c > @@ -769,8 +769,7 @@ static struct usb_serial_driver f81232_device = { > }, > .id_table = id_table, > .num_ports = 1, > - .bulk_in_size = 256, > - .bulk_out_size = 256, > + .bulk_out_size = 16,
These fields control the URB buffer sizes and defaults to the corresponding endpoint max-packet size, which would be 16 for all endpoints according to the datasheet above. So it seems you should really be setting bulk_in_size to 64 here (and possibly leave bulk_out_size unset) as that would appear to match your device buffer sizes. Johan
