diff options
Diffstat (limited to 'drivers/dma/ioat/dma_v2.c')
| -rw-r--r-- | drivers/dma/ioat/dma_v2.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/dma/ioat/dma_v2.c b/drivers/dma/ioat/dma_v2.c index f4a51d4d034..5d65f837797 100644 --- a/drivers/dma/ioat/dma_v2.c +++ b/drivers/dma/ioat/dma_v2.c @@ -508,6 +508,7 @@ int ioat2_alloc_chan_resources(struct dma_chan *c) struct ioat_ring_ent **ring; u64 status; int order; + int i = 0; /* have we already been set up? */ if (ioat->ring) @@ -548,8 +549,11 @@ int ioat2_alloc_chan_resources(struct dma_chan *c) ioat2_start_null_desc(ioat); /* check that we got off the ground */ - udelay(5); - status = ioat_chansts(chan); + do { + udelay(1); + status = ioat_chansts(chan); + } while (i++ < 20 && !is_ioat_active(status) && !is_ioat_idle(status)); + if (is_ioat_active(status) || is_ioat_idle(status)) { set_bit(IOAT_RUN, &chan->state); return 1 << ioat->alloc_order; |