usb: musb: use DMA mode 1 whenever possible

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Do not rely on any hints from gadget drivers and use DMA mode 1
whenever we expect data of at least the endpoint's packet size and
have not yet received a short packet.

The last packet if short is always transferred using DMA mode 0.

This patch fixes USB throughput issues in mass storage mode for
host to device transfers.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

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Roger Quadros 2012-08-07 16:09:56 +03:00 • committed by Felipe Balbi

parent 8e8a551654

commit 4f3e8d263d

1 changed files with 4 additions and 26 deletions

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drivers/usb/musb/musb_gadget.c

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