openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

USB: option: handle send_setup blacklisting at probe 

Determine whether to use send_setup at probe time rather than at every
call to send_setup.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2012-05-30 12:25:01 +02:00 committed by Greg Kroah-Hartman
parent 378fac2a46
commit e463c6dda8
1 changed files with 27 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
drivers/usb/serial/option.c
View File

@ -1276,6 +1276,10 @@ static struct usb_serial_driver * const serial_drivers[] = {
static bool debug;
struct option_private {
u8 bInterfaceNumber;
};
module_usb_serial_driver(serial_drivers, option_ids);
static bool is_blacklisted(const u8 ifnum, enum option_blacklist_reason reason,
@ -1306,6 +1310,7 @@ static int option_probe(struct usb_serial *serial,
const struct usb_device_id *id)
{
struct usb_wwan_intf_private *data;
struct option_private *priv;
struct usb_interface_descriptor *iface_desc =
&serial->interface->cur_altsetting->desc;
struct usb_device_descriptor *dev_desc = &serial->dev->descriptor;
@ -1346,9 +1351,22 @@ static int option_probe(struct usb_serial *serial,
data = kzalloc(sizeof(struct usb_wwan_intf_private), GFP_KERNEL);
if (!data)
return -ENOMEM;
data->send_setup = option_send_setup;
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv) {
kfree(data);
return -ENOMEM;
}
priv->bInterfaceNumber = iface_desc->bInterfaceNumber;
data->private = priv;
if (!is_blacklisted(iface_desc->bInterfaceNumber,
OPTION_BLACKLIST_SENDSETUP,
(struct option_blacklist_info *)id->driver_info)) {
data->send_setup = option_send_setup;
}
spin_lock_init(&data->susp_lock);
data->private = (void *)id->driver_info;
usb_set_serial_data(serial, data);
@ -1357,11 +1375,13 @@ static int option_probe(struct usb_serial *serial,
static void option_release(struct usb_serial *serial)
{
struct usb_wwan_intf_private *priv = usb_get_serial_data(serial);
struct usb_wwan_intf_private *intfdata = usb_get_serial_data(serial);
struct option_private *priv = intfdata->private;
usb_wwan_release(serial);
kfree(priv);
kfree(intfdata);
}
static void option_instat_callback(struct urb *urb)
@ -1429,16 +1449,10 @@ static int option_send_setup(struct usb_serial_port *port)
{
struct usb_serial *serial = port->serial;
struct usb_wwan_intf_private *intfdata = usb_get_serial_data(serial);
struct option_private *priv = intfdata->private;
struct usb_wwan_port_private *portdata;
int ifNum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
int val = 0;
if (is_blacklisted(ifNum, OPTION_BLACKLIST_SENDSETUP,
(struct option_blacklist_info *) intfdata->private)) {
dbg("No send_setup on blacklisted interface #%d\n", ifNum);
return -EIO;
}
portdata = usb_get_serial_port_data(port);
if (portdata->dtr_state)
@ -1446,9 +1460,9 @@ static int option_send_setup(struct usb_serial_port *port)
if (portdata->rts_state)
val |= 0x02;
return usb_control_msg(serial->dev,
usb_rcvctrlpipe(serial->dev, 0),
0x22, 0x21, val, ifNum, NULL, 0, USB_CTRL_SET_TIMEOUT);
return usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
0x22, 0x21, val, priv->bInterfaceNumber, NULL,
0, USB_CTRL_SET_TIMEOUT);
}
MODULE_AUTHOR(DRIVER_AUTHOR);