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| author | Sarah Sharp <sarah.a.sharp@linux.intel.com> | 2011-03-03 05:40:51 -0800 |
|---|---|---|
| committer | Sarah Sharp <sarah.a.sharp@linux.intel.com> | 2011-03-13 18:07:12 -0700 |
| commit | aa1b13efb7cfa9f7bf4942c1e858463e335c9500 (patch) | |
| tree | 3f5c6c8527d5998d615986cf67a2bce46399d09b /drivers/usb/host/xhci-ring.c | |
| parent | 22c6a35d41f71b5b40ba8debcb8bd4e8e291ae43 (diff) | |
| download | lwn-aa1b13efb7cfa9f7bf4942c1e858463e335c9500.tar.gz lwn-aa1b13efb7cfa9f7bf4942c1e858463e335c9500.zip | |
xhci: Modify check for TT info.
Commit d199c96d by Alan Stern ensured that low speed and full speed
devices below a high speed hub without a transaction translator (TT) would
never get enumerated. Simplify the check for a TT in the xHCI virtual
device allocation to only check if the usb_device references a parent's
TT.
Make sure not to set the TT information on LS/FS devices directly
connected to the roothub. The xHCI host doesn't really have a TT, and the
host will throw an error when those virtual device TT fields are set for a
device connected to the roothub. We need this check because the xHCI
driver will shortly register two roothubs: a USB 2.0 roothub and a USB 3.0
roothub.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Diffstat (limited to 'drivers/usb/host/xhci-ring.c')
0 files changed, 0 insertions, 0 deletions