diff options
Diffstat (limited to 'drivers/dma/ioat/init.c')
| -rw-r--r-- | drivers/dma/ioat/init.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/dma/ioat/init.c b/drivers/dma/ioat/init.c index efdee1a69fc4..d406056e8892 100644 --- a/drivers/dma/ioat/init.c +++ b/drivers/dma/ioat/init.c @@ -690,12 +690,11 @@ static int ioat_alloc_chan_resources(struct dma_chan *c) /* allocate a completion writeback area */ /* doing 2 32bit writes to mmio since 1 64b write doesn't work */ ioat_chan->completion = - dma_pool_alloc(ioat_chan->ioat_dma->completion_pool, - GFP_KERNEL, &ioat_chan->completion_dma); + dma_pool_zalloc(ioat_chan->ioat_dma->completion_pool, + GFP_KERNEL, &ioat_chan->completion_dma); if (!ioat_chan->completion) return -ENOMEM; - memset(ioat_chan->completion, 0, sizeof(*ioat_chan->completion)); writel(((u64)ioat_chan->completion_dma) & 0x00000000FFFFFFFF, ioat_chan->reg_base + IOAT_CHANCMP_OFFSET_LOW); writel(((u64)ioat_chan->completion_dma) >> 32, @@ -1074,6 +1073,7 @@ static int ioat3_dma_probe(struct ioatdma_device *ioat_dma, int dca) struct ioatdma_chan *ioat_chan; bool is_raid_device = false; int err; + u16 val16; dma = &ioat_dma->dma_dev; dma->device_prep_dma_memcpy = ioat_dma_prep_memcpy_lock; @@ -1173,6 +1173,17 @@ static int ioat3_dma_probe(struct ioatdma_device *ioat_dma, int dca) if (dca) ioat_dma->dca = ioat_dca_init(pdev, ioat_dma->reg_base); + /* disable relaxed ordering */ + err = pcie_capability_read_word(pdev, IOAT_DEVCTRL_OFFSET, &val16); + if (err) + return err; + + /* clear relaxed ordering enable */ + val16 &= ~IOAT_DEVCTRL_ROE; + err = pcie_capability_write_word(pdev, IOAT_DEVCTRL_OFFSET, val16); + if (err) + return err; + return 0; } |