Messages in this thread Patch in this message | | | From | Mika Westerberg <> | Subject | [PATCH 1/5] thunderbolt: Use 64-bit DMA mask if supported by the platform | Date | Mon, 18 Jun 2018 14:07:27 +0300 |
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PCI defaults to 32-bit DMA mask but this device is capable of full 64-bit addressing, so make sure we first try 64-bit DMA mask before falling back to the default 32-bit.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> --- drivers/thunderbolt/nhi.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/thunderbolt/nhi.c b/drivers/thunderbolt/nhi.c index f5a33e88e676..e3b7695fe37e 100644 --- a/drivers/thunderbolt/nhi.c +++ b/drivers/thunderbolt/nhi.c @@ -1015,6 +1015,14 @@ static int nhi_probe(struct pci_dev *pdev, const struct pci_device_id *id) spin_lock_init(&nhi->lock); + res = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + if (res) + res = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); + if (res) { + dev_err(&pdev->dev, "failed to set DMA mask\n"); + return res; + } + pci_set_master(pdev); tb = icm_probe(nhi); -- 2.17.1
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