diff options
| author | Dmitry Torokhov <dtor@vmware.com> | 2011-03-23 22:41:23 -0700 |
|---|---|---|
| committer | Paul Gortmaker <paul.gortmaker@windriver.com> | 2012-03-14 10:57:17 -0400 |
| commit | ffd9631bc87bb8fbffa33694fdfbd9997eee705f (patch) | |
| tree | 82232aa4caea17aa64c99a9196490a830c5aaced /scripts/patch-kernel | |
| parent | f7ebd338151ca55f81beec1a1b9e9f23cdd2241c (diff) | |
USB: xhci - fix math in xhci_get_endpoint_interval()
commit dfa49c4ad120a784ef1ff0717168aa79f55a483a upstream.
When parsing exponent-expressed intervals we subtract 1 from the
value and then expect it to match with original + 1, which is
highly unlikely, and we end with frequent spew:
usb 3-4: ep 0x83 - rounding interval to 512 microframes
Also, parsing interval for fullspeed isochronous endpoints was
incorrect - according to USB spec they use exponent-based
intervals (but xHCI spec claims frame-based intervals). I trust
USB spec more, especially since USB core agrees with it.
This should be queued for stable kernels back to 2.6.31.
Reviewed-by: Micah Elizabeth Scott <micah@vmware.com>
Signed-off-by: Dmitry Torokhov <dtor@vmware.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Diffstat (limited to 'scripts/patch-kernel')
0 files changed, 0 insertions, 0 deletions