From: Boris Glimcher <Boris.Glimcher@emc.com>
Date: Mon, 10 Dec 2018 09:12:21 +0000 (+0800)
Subject: switchtec: Set DMA coherent mask
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=aff614c6339c1ee2a74ea0afc491d6e30d0bad61;p=openwrt%2Fstaging%2Fblogic.git

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 d2bca2dd9889..480107ecb2ab 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];