usb: Fix tusb6010 for DMA API
authorTony Lindgren <tony@atomide.com>
Sat, 24 Apr 2010 00:41:15 +0000 (17:41 -0700)
committerGreg Kroah-Hartman <gregkh@suse.de>
Fri, 30 Apr 2010 16:25:09 +0000 (09:25 -0700)
commit1d0f11b39728099100a768cab2d7a90389017e75
treebe80fb2cb4cc2c236f37ca210f524ea54dec8d96
parent34e2beb2c883e0ea1b6135ad6f7713f7574a01aa
usb: Fix tusb6010 for DMA API

Commit 18eabe2347ae7a11b3db768695913724166dfb0e introduced
DMA buffer ownership. Fix tusb6010 accordingly. To compile,
also dummy musb_platform_save and restore functions need to
be added.

Also change the order of musb_read_fifo() to happen after
dma_cache_maint to have the DMA operations completed before
moving the remaining unaligned bytes with PIO. The DMA
access and PIO touch different areas of the FIFO, so this
change only makes the code a bit easier to follow.

Tested on n810 and g_ether with variable size ping test.
The test seems to fail for some ping sizes, but that seems to
be a different problem.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/usb/musb/tusb6010.c
drivers/usb/musb/tusb6010_omap.c