commit f6ab95b55735fa03cad8d0f966647e5df206e207
author Dan Williams <dan.j.williams@intel.com> Tue Sep 08 12:01:21 2009 -0700
committer Dan Williams <dan.j.williams@intel.com> Tue Sep 08 17:30:24 2009 -0700
tree 958127a8b5e171d53d26cd1a40d128e34bf8c7b1
parent bb3207863014c7310593146f11fbc6573eab43c8

ioat: preserve chanctrl bits when re-arming interrupts

The register write in ioat_dma_cleanup_tasklet is unfortunate in two
ways:
1/ It clears the extra 'enable' bits that we set at alloc_chan_resources time
2/ It gives the impression that it disables interrupts when it is in
   fact re-arming interrupts

[ Impact: fix, persist the value of the chanctrl register when re-arming ]

Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>