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(parent: 8e8a551) | patch
usb: musb: use DMA mode 1 whenever possible
authorRoger Quadros <rogerq@ti.com>
Tue, 7 Aug 2012 13:09:56 +0000 (16:09 +0300)
committerFelipe Balbi <balbi@ti.com>
Tue, 7 Aug 2012 13:16:34 +0000 (16:16 +0300)
commit4f3e8d263d34e52e75b5adfa14811467d3033d8e
tree4316c907e4fcc85fa01bb80ed800a4180f1adc1btree | snapshot (tar.gz zip)
parent8e8a55165469c99af0c24a276d997f9473dc89abcommit | diff
usb: musb: use DMA mode 1 whenever possible

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>
drivers/usb/musb/musb_gadget.c diff | blob | blame | history