diff options
Diffstat (limited to 'drivers/usb/gadget/u_serial.c')
| -rw-r--r-- | drivers/usb/gadget/u_serial.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c index 40f7716..6698ebb14 100644 --- a/drivers/usb/gadget/u_serial.c +++ b/drivers/usb/gadget/u_serial.c @@ -122,7 +122,7 @@ struct gs_port { }; /* increase N_PORTS if you need more */ -#define N_PORTS 4 +#define N_PORTS 8 static struct portmaster { struct mutex lock; /* protect open/close */ struct gs_port *port; @@ -380,7 +380,8 @@ __acquires(&port->port_lock) req->length = len; list_del(&req->list); - req->zero = (gs_buf_data_avail(&port->port_write_buf) == 0); + req->zero = (gs_buf_data_avail(&port->port_write_buf) == 0) + && (req->length % in->maxpacket == 0); pr_vdebug(PREFIX "%d: tx len=%d, 0x%02x 0x%02x 0x%02x ...\n", port->port_num, len, *((u8 *)req->buf), @@ -1028,7 +1029,7 @@ static const struct tty_operations gs_tty_ops = { static struct tty_driver *gs_tty_driver; -static int __init +static int gs_port_alloc(unsigned port_num, struct usb_cdc_line_coding *coding) { struct gs_port *port; @@ -1074,7 +1075,7 @@ gs_port_alloc(unsigned port_num, struct usb_cdc_line_coding *coding) * * Returns negative errno or zero. */ -int __init gserial_setup(struct usb_gadget *g, unsigned count) +int gserial_setup(struct usb_gadget *g, unsigned count) { unsigned i; struct usb_cdc_line_coding coding; |