From: Wei WANG <wei_w...@realsil.com.cn>

Realtek PCIe card reader only supports 32bit DMA.
This declaration can improve the readability

Signed-off-by: Wei WANG <wei_w...@realsil.com.cn>
---
 drivers/mfd/rtsx_pcr.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/mfd/rtsx_pcr.c b/drivers/mfd/rtsx_pcr.c
index fa2c2bc..1dc64bb 100644
--- a/drivers/mfd/rtsx_pcr.c
+++ b/drivers/mfd/rtsx_pcr.c
@@ -1010,6 +1010,10 @@ static int __devinit rtsx_pci_probe(struct pci_dev 
*pcidev,
                pci_name(pcidev), (int)pcidev->vendor, (int)pcidev->device,
                (int)pcidev->revision);
 
+       ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(32));
+       if (ret < 0)
+               return ret;
+
        ret = pci_enable_device(pcidev);
        if (ret)
                return ret;
-- 
1.7.9.5

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