tree 4451919320800974f1a937fe5ee25552307166a6
parent 65e8b083fc8ec303499baa1924ae032d46d29990
author Haavard Skinnemoen <haavard.skinnemoen@atmel.com> 1223212619 +0200
committer Haavard Skinnemoen <haavard.skinnemoen@atmel.com> 1223231961 +0200

atmel-mci: Don't overwrite error bits when NOTBUSY is set

After a data error, we wait for the NOTBUSY bit to be set so that we can
be sure the data transfer is completely finished. However, when NOTBUSY
is set, the interrupt handler copies the contents of SR into
data_status, overwriting any error bits we may have detected earlier.

To avoid this, initialize data_status to 0 before starting a request, and
don't overwrite it unless it still contains 0.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>