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V4L/DVB (11928): au0828: provide module option to disable USB speed check

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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>
This commit is contained in:
Devin Heitmueller 2009-05-27 23:46:17 -03:00 committed by Mauro Carvalho Chehab
parent e2a1b79f7d
commit d6a9a430a6
1 changed files with 6 additions and 1 deletions
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7
drivers/media/video/au0828/au0828-core.c
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@ -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");