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(parent: bb32078) | patch
ioat: preserve chanctrl bits when re-arming interrupts
authorDan Williams <dan.j.williams@intel.com>
Tue, 8 Sep 2009 19:01:21 +0000 (12:01 -0700)
committerDan Williams <dan.j.williams@intel.com>
Wed, 9 Sep 2009 00:30:24 +0000 (17:30 -0700)
commitf6ab95b55735fa03cad8d0f966647e5df206e207
tree958127a8b5e171d53d26cd1a40d128e34bf8c7b1tree | snapshot
parentbb3207863014c7310593146f11fbc6573eab43c8commit | diff
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>
drivers/dma/ioat/dma.c diff | blob | history
drivers/dma/ioat/dma_v2.c diff | blob | history
drivers/dma/ioat/registers.h diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git