switchtec: Set DMA coherent mask
Switchtec hardware supports 64-bit DMA, so set the correct DMA mask. This
allows the CMA to allocate larger buffers for memory windows.
Signed-off-by: Boris Glimcher <Boris.Glimcher@emc.com>
Signed-off-by: Wesley Sheng <wesley.sheng@microchip.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
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 @@
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];
