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Commit d6a9a430 authored by Devin Heitmueller's avatar Devin Heitmueller Committed by Mauro Carvalho Chehab
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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: default avatarDevin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent e2a1b79f

drivers/media/video/au0828/au0828-core.c

+6 −1
Original line number Diff line number Diff line
@@ -36,6 +36,11 @@ int au0828_debug; 
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 @@ static int au0828_usb_probe(struct usb_interface *interface, 
	 * 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");