tree eeb3a432eab9e357b332366fe7719fa932e29b88
parent af0940dac37545b1e7900b19c464fb6367d3f82f
author Jay Fenlason <fenlason@redhat.com> 1260559438 -0500
committer Stefan Richter <stefanr@s5r6.in-berlin.de> 1260564225 +0100

firewire: ohci: handle receive packets with a data length of zero

Queueing to receive an ISO packet with a payload length of zero
silently does nothing in dualbuffer mode, and crashes the kernel in
packet-per-buffer mode.  Return an error in dualbuffer mode, because
the DMA controller won't let us do what we want, and work correctly in
packet-per-buffer mode.

Signed-off-by: Jay Fenlason <fenlason@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: stable@kernel.org