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authorMathias Nyman <mathias.nyman@linux.intel.com>2021-01-29 15:00:44 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-01-29 14:16:52 +0100
commit3c648d3deb0f95c360c9b91f49c0f313db0cef31 (patch)
tree97c30ae299f573b556743ce873f086dcf40f9e0f /Documentation/ABI
parent51ee4a84300200c51303ef15b84981b2edb6ec47 (diff)
xhci: handle halting transfer event properly after endpoint stop and halt raced.
If we receive a transfer event indicating that an endpoint should be halted, but current endpoint state doesn't match it, then the halt might be just resolved by the stop endpoint completion handler that detects the halted endpoint due to a context state error. In this case the TD we halted on is already moved to the cancelled TD list, and should not be successfully completed and given back anymore. Let the stop endpoint completion handler reset the endpoint, and then let the reset endpoint handler give back the cancelled TD among all other ones on the cancelled TD list Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Link: https://lore.kernel.org/r/20210129130044.206855-28-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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