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authorDevin Heitmueller <dheitmueller@kernellabs.com>2009-05-27 23:46:17 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-06-16 19:07:22 -0300
commitd6a9a430a63adac71f2d23d4eb8f4eb467fc82c2 (patch)
tree261a97ba74dfe5ec529476e86915397a4449e952 /drivers/media/video
parente2a1b79f7dc54a6f1cc8821e0c7fd68ba7568d81 (diff)
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>
Diffstat (limited to 'drivers/media/video')
-rw-r--r--drivers/media/video/au0828/au0828-core.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/media/video/au0828/au0828-core.c b/drivers/media/video/au0828/au0828-core.c
index 2b3f64d7a7f..3544a2f12f1 100644
--- a/drivers/media/video/au0828/au0828-core.c
+++ b/drivers/media/video/au0828/au0828-core.c
@@ -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");