tree 92c9daeab81fdba8736c18ae1b2b27e652aa55b5
parent 679f9b7c7c7d3c746792138e9d7d76578ef52c41
author Ben Dooks <ben-linux@fluff.org> 1279528842 +0100
committer Greg Kroah-Hartman <gregkh@suse.de> 1281476142 -0700

USB: s3c-hsotg: Avoid overwriting contents of perodic in 'fifo'

In shared fifo mode (used on older SoCs) the periodic in fifo beahves
much more like a packet buffer, discarding old data when writing new
data. Avoid this by ensuring that we do not load new transactions in
when there is data sitting already in the FIFO.

Note, this may not be an observed bug, we are fixing the case that this
may happen.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>