Commit 67c752b4 authored Apr 28, 2006 by Duncan Sands Committed by Greg Kroah-Hartman May 08, 2006

[PATCH] USBATM: change the default speedtouch iso altsetting

The maximum possible bandwidth for a speedtouch modem is about 7Mbaud.
You can only get this by using isochronous urbs (enable_isoc=1) and
altsetting 3. With the current default altsetting of 2, the modem
maxes out at about 4Mbaud. So change the default altsetting to 3
when using isochronous urbs. It would be nice to base the altsetting
on the detected line speed, but that's hard given the current design.

Signed-off-by: Duncan Sands <baldrick@free.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

parent 839ab1d4

drivers/usb/atm/speedtch.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -69,7 +69,7 @@ static const char speedtch_driver_name[] = "speedtch";
		#define RESUBMIT_DELAY 1000 /* milliseconds */

		#define DEFAULT_BULK_ALTSETTING 1
		#define DEFAULT_ISOC_ALTSETTING 2
		#define DEFAULT_ISOC_ALTSETTING 3
		#define DEFAULT_DL_512_FIRST 0
		#define DEFAULT_ENABLE_ISOC 0
		#define DEFAULT_SW_BUFFERING 0