tree 6a1064c8981f1ab66086ab4fc843946d754fbdfd
parent a5919442bc61846e36011671df0d67c72275337e
author Huang Shijie <b32955@freescale.com> 1353567990 +0800
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1353973124 -0800

serial: mxs-auart: unmap the scatter list before we copy the data

We should first unmap the DMA scatter list for receiving data, and
then copy the data from the DMA buffer.

The old code misses unmap the scatter list for RX. This patch fixes it.

Signed-off-by: Huang Shijie <b32955@freescale.com>
Tested-by: Lauri Hintsala <lauri.hintsala@bluegiga.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>