--- zzzz-none-000/linux-3.10.107/drivers/media/usb/gspca/jpeg.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/media/usb/gspca/jpeg.h	2021-02-04 17:41:59.000000000 +0000
@@ -154,7 +154,9 @@
 {
 	int i, sc;
 
-	if (quality < 50)
+	if (quality <= 0)
+		sc = 5000;
+	else if (quality < 50)
 		sc = 5000 / quality;
 	else
 		sc = 200 - quality * 2;