1 files changed, 27 insertions, 0 deletions

diff --git a/drivers/media/dvb/dvb-usb/dvb-usb-firmware.c b/drivers/media/dvb/dvb-usb/dvb-usb-firmware.c
index 51ce7403999b..b2670476c3f2 100644
--- a/drivers/media/dvb/dvb-usb/dvb-usb-firmware.c
+++ b/drivers/media/dvb/dvb-usb/dvb-usb-firmware.c
@@ -74,6 +74,27 @@ static int usb_cypress_load_firmware(struct usb_device *udev, const struct firmw
         return ret;
 }
 
+/*
+ * DViCO bluebird firmware needs the "warm" product ID to be patched into the
+ * firmware file before download.
+ */
+#define BLUEBIRD_01_ID_OFFSET 6638
+static int dvb_usb_patch_dvico_firmware(struct usb_device *udev, const struct firmware *fw)
+{
+        if (fw->size < BLUEBIRD_01_ID_OFFSET + 4)
+                return -EINVAL;
+
+        if (fw->data[BLUEBIRD_01_ID_OFFSET] == (USB_VID_DVICO & 0xff) &&
+            fw->data[BLUEBIRD_01_ID_OFFSET + 1] == USB_VID_DVICO >> 8) {
+                fw->data[BLUEBIRD_01_ID_OFFSET + 2] = udev->descriptor.idProduct + 1;
+                fw->data[BLUEBIRD_01_ID_OFFSET + 3] = udev->descriptor.idProduct >> 8;
+
+                return 0;
+        }
+
+        return -EINVAL;
+}
+
 int dvb_usb_download_firmware(struct usb_device *udev, struct dvb_usb_properties *props)
 {
         int ret;
@@ -88,6 +109,12 @@ int dvb_usb_download_firmware(struct usb_device *udev, struct dvb_usb_properties
 
         info("downloading firmware from file '%s'",props->firmware);
 
+        if (le16_to_cpu(udev->descriptor.idVendor) == USB_VID_DVICO) {
+                ret = dvb_usb_patch_dvico_firmware(udev, fw);
+                if (ret != 0)
+                        warn("this firmware file not recognised");
+        }
+
         switch (props->usb_ctrl) {
                 case CYPRESS_AN2135:
                 case CYPRESS_AN2235: