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xhci: add xhci_get_virt_ep() helper
authorMathias Nyman <mathias.nyman@linux.intel.com>
Fri, 29 Jan 2021 13:00:22 +0000 (15:00 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 29 Jan 2021 13:16:50 +0000 (14:16 +0100)
commitb1adc42d440df3233255e313a45ab7e9b2b74096
tree910a9086f8dd43621f9d402f082e364dbd0f0b74
parenta181030703df185c20a8eed2313beb1b0b025e0d
xhci: add xhci_get_virt_ep() helper

In several event handlers we need to find the right endpoint
structure from slot_id and ep_index in the event.

Add a helper for this, check that slot_id and ep_index are valid.

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20210129130044.206855-6-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/host/xhci-ring.c
drivers/usb/host/xhci.h