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V4L/DVB: gspca - main: Function gspca_dev_probe2 added 

This function is used when the USB video interface is checked by
the subdriver.

Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Jean-François Moine 2010-06-05 07:47:36 -03:00 committed by Mauro Carvalho Chehab
parent 618a864ee7
commit 4462864d72
2 changed files with 36 additions and 15 deletions
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46
drivers/media/video/gspca/gspca.c
View File

@ -2253,31 +2253,18 @@ static struct video_device gspca_template = {
* This function must be called by the sub-driver when it is
* called for probing a new device.
*/
int gspca_dev_probe(struct usb_interface *intf,
int gspca_dev_probe2(struct usb_interface *intf,
const struct usb_device_id *id,
const struct sd_desc *sd_desc,
int dev_size,
struct module *module)
{
struct usb_interface_descriptor *interface;
struct gspca_dev *gspca_dev;
struct usb_device *dev = interface_to_usbdev(intf);
int ret;
PDEBUG(D_PROBE, "probing %04x:%04x", id->idVendor, id->idProduct);
/* we don't handle multi-config cameras */
if (dev->descriptor.bNumConfigurations != 1) {
PDEBUG(D_ERR, "Too many config");
return -ENODEV;
}
/* the USB video interface must be the first one */
interface = &intf->cur_altsetting->desc;
if (dev->config->desc.bNumInterfaces != 1 &&
interface->bInterfaceNumber != 0)
return -ENODEV;
/* create the device */
if (dev_size < sizeof *gspca_dev)
dev_size = sizeof *gspca_dev;
@ -2293,7 +2280,7 @@ int gspca_dev_probe(struct usb_interface *intf,
goto out;
}
gspca_dev->dev = dev;
gspca_dev->iface = interface->bInterfaceNumber;
gspca_dev->iface = intf->cur_altsetting->desc.bInterfaceNumber;
gspca_dev->nbalt = intf->num_altsetting;
gspca_dev->sd_desc = sd_desc;
gspca_dev->nbufread = 2;
@ -2345,6 +2332,35 @@ out:
kfree(gspca_dev);
return ret;
}
EXPORT_SYMBOL(gspca_dev_probe2);
/* same function as the previous one, but check the interface */
int gspca_dev_probe(struct usb_interface *intf,
const struct usb_device_id *id,
const struct sd_desc *sd_desc,
int dev_size,
struct module *module)
{
struct usb_device *dev = interface_to_usbdev(intf);
/* we don't handle multi-config cameras */
if (dev->descriptor.bNumConfigurations != 1) {
PDEBUG(D_ERR, "%04x:%04x too many config",
id->idVendor, id->idProduct);
return -ENODEV;
}
/* the USB video interface must be the first one */
if (dev->config->desc.bNumInterfaces != 1
&& intf->cur_altsetting->desc.bInterfaceNumber != 0) {
PDEBUG(D_ERR, "%04x:%04x bad interface %d",
id->idVendor, id->idProduct,
intf->cur_altsetting->desc.bInterfaceNumber);
return -ENODEV;
}
return gspca_dev_probe2(intf, id, sd_desc, dev_size, module);
}
EXPORT_SYMBOL(gspca_dev_probe);
/*

5
drivers/media/video/gspca/gspca.h
View File

@ -217,6 +217,11 @@ int gspca_dev_probe(struct usb_interface *intf,
const struct sd_desc *sd_desc,
int dev_size,
struct module *module);
int gspca_dev_probe2(struct usb_interface *intf,
const struct usb_device_id *id,
const struct sd_desc *sd_desc,
int dev_size,
struct module *module);
void gspca_disconnect(struct usb_interface *intf);
void gspca_frame_add(struct gspca_dev *gspca_dev,
enum gspca_packet_type packet_type,