[media] rtl28xxu: dynamic USB ID support
DVB USB core refuses to load driver when current USB ID
does not match IDs on driver table. Due to that dynamic
IDs does not work. Replace reference design ID by dynamic
ID in .probe() in order to get it working.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/dvb/dvb-usb/rtl28xxu.c b/drivers/media/dvb/dvb-usb/rtl28xxu.c
index 8f4736a..4e69e9d 100644
--- a/drivers/media/dvb/dvb-usb/rtl28xxu.c
+++ b/drivers/media/dvb/dvb-usb/rtl28xxu.c
@@ -909,6 +909,8 @@
int ret, i;
int properties_count = ARRAY_SIZE(rtl28xxu_properties);
struct dvb_usb_device *d;
+ struct usb_device *udev;
+ bool found;
deb_info("%s: interface=%d\n", __func__,
intf->cur_altsetting->desc.bInterfaceNumber);
@@ -916,6 +918,29 @@
if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
return 0;
+ /* Dynamic USB ID support. Replaces first device ID with current one .*/
+ udev = interface_to_usbdev(intf);
+
+ for (i = 0, found = false; i < ARRAY_SIZE(rtl28xxu_table) - 1; i++) {
+ if (rtl28xxu_table[i].idVendor ==
+ le16_to_cpu(udev->descriptor.idVendor) &&
+ rtl28xxu_table[i].idProduct ==
+ le16_to_cpu(udev->descriptor.idProduct)) {
+ found = true;
+ break;
+ }
+ }
+
+ if (!found) {
+ deb_info("%s: using dynamic ID %04x:%04x\n", __func__,
+ le16_to_cpu(udev->descriptor.idVendor),
+ le16_to_cpu(udev->descriptor.idProduct));
+ rtl28xxu_properties[0].devices[0].warm_ids[0]->idVendor =
+ le16_to_cpu(udev->descriptor.idVendor);
+ rtl28xxu_properties[0].devices[0].warm_ids[0]->idProduct =
+ le16_to_cpu(udev->descriptor.idProduct);
+ }
+
for (i = 0; i < properties_count; i++) {
ret = dvb_usb_device_init(intf, &rtl28xxu_properties[i],
THIS_MODULE, &d, adapter_nr);