xhci: add xhci_virt_ep_to_ring() helper

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Two existing ring helpers, xhci_triad_to_transfer_ring() and
xhci_stream_id_to_ring() have partially similar functionality.
Both have some limitation, especieally with boundary checking.

Add a new xhci_virt_ep_to_ring() helper with proper boundary checking
that can replace parts of one helper, and later will completely
replace the other helper.

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20210129130044.206855-8-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Mathias Nyman 2021-01-29 15:00:24 +02:00 • committed by Greg Kroah-Hartman

parent 03ed579d9d

commit 42f2890aa9

1 changed files with 22 additions and 24 deletions

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drivers/usb/host/xhci-ring.c

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