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>
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index 678675b..b7a5655 100644
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -2253,31 +2253,18 @@
* 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 @@
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 @@
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);
/*