MIPS: Netlogic: Fix USB block's coherent DMA mask

The on-chip USB controller on Netlogic XLP does not suppport
DMA beyond 32-bit physical address. Set the coherent_dma_mask
of the USB in its PCI fixup to support this.

Signed-off-by: Ganesan Ramalingam <ganesanr@broadcom.com>
Signed-off-by: Jayachandran C. <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5596/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/mips/netlogic/xlp/usb-init.c b/arch/mips/netlogic/xlp/usb-init.c
index 9c401dd78337..ef3897ef0dc7 100644
--- a/arch/mips/netlogic/xlp/usb-init.c
+++ b/arch/mips/netlogic/xlp/usb-init.c
@@ -119,7 +119,7 @@ static u64 xlp_usb_dmamask = ~(u32)0;
 static void nlm_usb_fixup_final(struct pci_dev *dev)
 {
         dev->dev.dma_mask               = &xlp_usb_dmamask;
-        dev->dev.coherent_dma_mask      = DMA_BIT_MASK(64);
+        dev->dev.coherent_dma_mask      = DMA_BIT_MASK(32);
         switch (dev->devfn) {
         case 0x10:
                 dev->irq = PIC_EHCI_0_IRQ;