V4L/DVB (11928): au0828: provide module option to disable USB speed check
Add an au0828 module option that allows a user to override the USB speed check.
Intended for advanced users who understand the consequences of trying to use
the device with a 12Mbps bus.
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/au0828/au0828-core.c b/drivers/media/video/au0828/au0828-core.c
index 2b3f64d..3544a2f 100644
--- a/drivers/media/video/au0828/au0828-core.c
+++ b/drivers/media/video/au0828/au0828-core.c
@@ -36,6 +36,11 @@
module_param_named(debug, au0828_debug, int, 0644);
MODULE_PARM_DESC(debug, "enable debug messages");
+static unsigned int disable_usb_speed_check;
+module_param(disable_usb_speed_check, int, 0444);
+MODULE_PARM_DESC(disable_usb_speed_check,
+ "override min bandwidth requirement of 480M bps");
+
#define _AU0828_BULKPIPE 0x03
#define _BULKPIPESIZE 0xffff
@@ -186,7 +191,7 @@
* video stream wouldn't likely work, since 12 Mbps is generally
* not enough even for most Digital TV streams.
*/
- if (usbdev->speed != USB_SPEED_HIGH) {
+ if (usbdev->speed != USB_SPEED_HIGH && disable_usb_speed_check == 0) {
printk(KERN_ERR "au0828: Device initialization failed.\n");
printk(KERN_ERR "au0828: Device must be connected to a "
"high-speed USB 2.0 port.\n");