From dba3caf6210397635714c7f46129d8c0c9af2512 Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Wed, 25 Jul 2018 11:03:16 +0300 Subject: thunderbolt: Use 64-bit DMA mask if supported by the platform 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 Signed-off-by: Greg Kroah-Hartman --- drivers/thunderbolt/nhi.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers/thunderbolt') 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); -- cgit v1.2.3