The bug was introduced by commit 
d5aa3856fd09ad0ea04619d6cba31192dac08e84
removing the probe sequence of hv7131r with bridge sn9c120 and so, letting
the sensor inactive.
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Cc: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
                reg_w1(gspca_dev, 0x01, 0x43);
                reg_w1(gspca_dev, 0x17, 0x61);
                reg_w1(gspca_dev, 0x01, 0x42);
-               if (sd->sensor == SENSOR_HV7131R
-                   && sd->bridge == BRIDGE_SN9C102P)
+               if (sd->sensor == SENSOR_HV7131R)
                        hv7131r_probe(gspca_dev);
                break;
        }