diff options
Diffstat (limited to 'drivers/dma/ioat')
| -rw-r--r-- | drivers/dma/ioat/dma.c | 1 | ||||
| -rw-r--r-- | drivers/dma/ioat/dma_v2.c | 9 | ||||
| -rw-r--r-- | drivers/dma/ioat/dma_v3.c | 1 |
3 files changed, 9 insertions, 2 deletions
diff --git a/drivers/dma/ioat/dma.c b/drivers/dma/ioat/dma.c index c9213ead4a2..a4d6cb0c034 100644 --- a/drivers/dma/ioat/dma.c +++ b/drivers/dma/ioat/dma.c @@ -34,6 +34,7 @@ #include <linux/delay.h> #include <linux/dma-mapping.h> #include <linux/workqueue.h> +#include <linux/prefetch.h> #include <linux/i7300_idle.h> #include "dma.h" #include "registers.h" diff --git a/drivers/dma/ioat/dma_v2.c b/drivers/dma/ioat/dma_v2.c index effd140fc04..5d65f837797 100644 --- a/drivers/dma/ioat/dma_v2.c +++ b/drivers/dma/ioat/dma_v2.c @@ -34,6 +34,7 @@ #include <linux/delay.h> #include <linux/dma-mapping.h> #include <linux/workqueue.h> +#include <linux/prefetch.h> #include <linux/i7300_idle.h> #include "dma.h" #include "dma_v2.h" @@ -507,6 +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) @@ -547,8 +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; diff --git a/drivers/dma/ioat/dma_v3.c b/drivers/dma/ioat/dma_v3.c index d0f49909847..d845dc4b710 100644 --- a/drivers/dma/ioat/dma_v3.c +++ b/drivers/dma/ioat/dma_v3.c @@ -60,6 +60,7 @@ #include <linux/gfp.h> #include <linux/dmaengine.h> #include <linux/dma-mapping.h> +#include <linux/prefetch.h> #include "registers.h" #include "hw.h" #include "dma.h" |