diff options
author | Alex Shi <alex.shi@linaro.org> | 2017-03-20 12:02:26 +0800 |
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committer | Alex Shi <alex.shi@linaro.org> | 2017-03-20 12:02:26 +0800 |
commit | d97f745e1d2fea4d2f308e5e06eee81a9a84f3f5 (patch) | |
tree | 1a24a0ad0c33e1d6344d2454b61748afb74a6693 /drivers/usb/serial/oti6858.c | |
parent | cb370744bc101be91a0bc3e9fbdb670ab44df97d (diff) | |
parent | d9e0350d2575a20ee7783427da9bd6b6107eb983 (diff) |
Merge tag 'v4.1.39' into linux-linaro-lsk-v4.1lsk-v4.1-17.03
This is the 4.1.39 stable release
Diffstat (limited to 'drivers/usb/serial/oti6858.c')
-rw-r--r-- | drivers/usb/serial/oti6858.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/usb/serial/oti6858.c b/drivers/usb/serial/oti6858.c index a4b88bc038b6..b8bf52bf7a94 100644 --- a/drivers/usb/serial/oti6858.c +++ b/drivers/usb/serial/oti6858.c @@ -134,6 +134,7 @@ static int oti6858_chars_in_buffer(struct tty_struct *tty); static int oti6858_tiocmget(struct tty_struct *tty); static int oti6858_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); +static int oti6858_attach(struct usb_serial *serial); static int oti6858_port_probe(struct usb_serial_port *port); static int oti6858_port_remove(struct usb_serial_port *port); @@ -158,6 +159,7 @@ static struct usb_serial_driver oti6858_device = { .write_bulk_callback = oti6858_write_bulk_callback, .write_room = oti6858_write_room, .chars_in_buffer = oti6858_chars_in_buffer, + .attach = oti6858_attach, .port_probe = oti6858_port_probe, .port_remove = oti6858_port_remove, }; @@ -324,6 +326,20 @@ static void send_data(struct work_struct *work) usb_serial_port_softint(port); } +static int oti6858_attach(struct usb_serial *serial) +{ + unsigned char num_ports = serial->num_ports; + + if (serial->num_bulk_in < num_ports || + serial->num_bulk_out < num_ports || + serial->num_interrupt_in < num_ports) { + dev_err(&serial->interface->dev, "missing endpoints\n"); + return -ENODEV; + } + + return 0; +} + static int oti6858_port_probe(struct usb_serial_port *port) { struct oti6858_private *priv; |