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| author | Mathias Nyman | 2015-02-24 17:27:02 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2015-02-24 17:34:32 +0100 |
| commit | 27082e2654dc148078b0abdfc3c8e5ccbde0ebfa (patch) | |
| tree | d458d88a8453e889b21e4036a4c3d4add33529e8 /drivers/usb/core/devio.c | |
| parent | xhci: Allocate correct amount of scratchpad buffers (diff) | |
| download | kernel-qcow2-linux-27082e2654dc148078b0abdfc3c8e5ccbde0ebfa.tar.gz kernel-qcow2-linux-27082e2654dc148078b0abdfc3c8e5ccbde0ebfa.tar.xz kernel-qcow2-linux-27082e2654dc148078b0abdfc3c8e5ccbde0ebfa.zip | |
xhci: Clear the host side toggle manually when endpoint is 'soft reset'
Main benefit of this is to get xhci connected USB scanners to work.
Some devices use a clear endpoint halt request as a 'soft reset' even if
the endpoint is not halted. This will clear the toggle and sequence on the
device side. xHCI however refuses to reset a non-halted endpoint, so instead
we need to issue a configure endpoint command on xHCI to clear its host side
toggle and sequence, and get it in sync with the device side.
Tested-by: Mike Mammarella <mikem@crystalorb.net>
Cc: <stable@vger.kernel.org> # v3.18
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/core/devio.c')
0 files changed, 0 insertions, 0 deletions