From: Boris Glimcher <Boris.Glimcher@xxxxxxx> Switchtec hardware supports 64-bit DMA, set the correct DMA mask. This allows the CMA to allocate larger buffers for memory windows. Signed-off-by: Boris Glimcher <Boris.Glimcher@xxxxxxx> Signed-off-by: Wesley Sheng <wesley.sheng@xxxxxxxxxxxxx> Reviewed-by: Logan Gunthorpe <logang@xxxxxxxxxxxx> --- drivers/pci/switch/switchtec.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c index d2bca2d..480107e 100644 --- a/drivers/pci/switch/switchtec.c +++ b/drivers/pci/switch/switchtec.c @@ -1237,6 +1237,10 @@ static int switchtec_init_pci(struct switchtec_dev *stdev, if (rc) return rc; + rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); + if (rc) + return rc; + pci_set_master(pdev); stdev->mmio = pcim_iomap_table(pdev)[0]; -- 2.7.4
