usb: dwc3: switch trb enqueue/dequeue and first_trb_index to u8

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We *know* that we have 1 PAGE (4096 bytes) for our
TRB poll. We also know the size of each TRB and know
that we can fit 256 of them in one PAGE. By using a
u8 type we can make sure that:

	enqueue++ % 256;

gets optimized to an increment only.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

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Felipe Balbi 2016-04-05 12:42:15 +03:00

parent 5ef68c56e1

commit c28f82595d

1 changed files with 13 additions and 3 deletions

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16

drivers/usb/dwc3/core.h

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