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| author | Bin Meng <bmeng.cn@gmail.com> | 2018-05-23 23:40:49 -0700 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2018-05-30 11:59:10 +0200 |
| commit | eaaefb066c86f08fb285e73fb8c5fbf497be6b57 (patch) | |
| tree | 18edc8551c644e2e79d98a65f179a2f0280ca1f4 /README | |
| parent | ae751b060e8cee3f9c48112898cd3e31ee6c0734 (diff) | |
usb: xhci: Fix config fail of FS hub behind a HS hub with MTT
If a full speed hub connects to a high speed hub which supports MTT,
the MTT field of its slot context will be set to 1 when xHCI driver
setups an xHCI virtual device in xhci_setup_addressable_virt_dev().
Once usb core fetch its hub descriptor, and need to update the xHC's
internal data structures for the device, the HUB field of its slot
context will be set to 1 too, meanwhile MTT is also set before, this
will cause configure endpoint command fail. In the case, we should
clear MTT to 0 for full speed hub according to section 6.2.2.
This keeps in sync with Linux kernel commit:
096b110: usb: xhci: fix config fail of FS hub behind a HS hub with MTT
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'README')
0 files changed, 0 insertions, 0 deletions