usb: xhci-hcd: Simplify TRB initialization code

Current TRB initialization code in xHCI driver is:

    a) Somewhat inconsistent in endianness correctness: LE is insured
       in some places whereas in some places it isn't

    b) Somewhat inconsistent in how DMA buffer address is being
       written: some places utilize xhci_write_64, whereas others just
       assing cmd_trb field directly

    c) A bit wasetful since in a number of codepaths where TRB is used
       it is memset to zero first only to have 80+% of its fields
       changed to something else right after.

To fix all of the above introduce xhci_init_event_cmd_trb(), that will
initialize all of the fileds to desired values only once as well as
taking care of endianness.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

0 files changed, 0 insertions, 0 deletions