mfd: rtsx: Declare that the DMA address limitation is 32bit explicitly
Realtek PCIe card reader only supports 32bit DMA.
This declaration can improve the readability.
Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/mfd/rtsx_pcr.c b/drivers/mfd/rtsx_pcr.c
index c021ce3..b2cfd2e 100644
--- a/drivers/mfd/rtsx_pcr.c
+++ b/drivers/mfd/rtsx_pcr.c
@@ -1029,6 +1029,10 @@
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;