From: Alan Stern Date: Tue, 16 Jan 2007 16:59:45 +0000 (-0500) Subject: EHCI: force high-speed devices to run at full speed X-Git-Tag: v2.6.21-rc1~92^2~29^2~26 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=57e06c11;p=pandora-kernel.git EHCI: force high-speed devices to run at full speed This patch (as710) adds a sysfs class-device attribute file named "companion" for EHCI controllers. The file contains a list of port numbers that are dedicated to the companion controller; by writing a port number to the file the user can force a high-speed device attached directly to the computer to run at full speed. (As far as I know it is not possible to do this for a device attached to an external hub.) A port is removed from the file by writing the negative of its port number. Several users have asked for this facility and it seems like a useful thing to have. Every now and then one runs across a device which behaves much better at full speed than at high speed. Signed-off-by: Alan Stern Cc: David Brownell Signed-off-by: Greg Kroah-Hartman --- Reading git-diff-tree failed