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| author | Alan Stern <stern@rowland.harvard.edu> | 2012-09-28 16:01:34 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-22 08:57:43 -0700 |
| commit | 98cae42d82fe9c9e2b5dacdf391edaa007e147e5 (patch) | |
| tree | 1fc9be10a439d0557d673ca570b48dce3e56df79 /include/linux/usb.h | |
| parent | c3ee9b76aa93fbf59727e02fac9914c7355108f3 (diff) | |
| download | linux-stable-98cae42d82fe9c9e2b5dacdf391edaa007e147e5.tar.gz linux-stable-98cae42d82fe9c9e2b5dacdf391edaa007e147e5.tar.bz2 linux-stable-98cae42d82fe9c9e2b5dacdf391edaa007e147e5.zip | |
EHCI: use the isochronous scheduling threshold
This patch (as1609) changes the way ehci-hcd uses the "Isochronous
Scheduling Threshold" in its calculations. Until now the code has
ignored the threshold except for certain Intel PCI-based controllers.
This violates the EHCI spec.
The new code takes the threshold into account always, removing the
need for the fs_i_thresh quirk flag. In addition it implements the
"full frame cache" setting more efficiently, moving forward only as
far as the next frame boundary instead of always moving forward 8
microframes.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/usb.h')
0 files changed, 0 insertions, 0 deletions