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authorMathias Nyman <mathias.nyman@linux.intel.com>2015-02-24 18:27:02 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-02-24 08:34:32 -0800
commit27082e2654dc148078b0abdfc3c8e5ccbde0ebfa (patch)
treed458d88a8453e889b21e4036a4c3d4add33529e8 /drivers/usb/host/xhci-hub.c
parent6596a926b0b6c80b730a1dd2fa91908e0a539c37 (diff)
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/host/xhci-hub.c')
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