ehci-octeon driver used a 64-bit dma_mask. With removal of ehci-octeon
and usage of ehci-platform ehci dma_mask is now limited to 32 bits
(coerced in ehci_platform_probe).
Provide a flag in ehci platform data to allow use of 64 bits for
dma_mask.
Cc: David Daney <david.daney@xxxxxxxxxx>
Cc: Alex Smith <alex.smith@xxxxxxxxxx>
Cc: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andreas Herrmann <andreas.herrmann@xxxxxxxxxxxxxxxxxx>
Tested-by: Aaro Koskinen <aaro.koskinen@xxxxxx>
---
arch/mips/cavium-octeon/octeon-platform.c | 4 +---
drivers/usb/host/ehci-platform.c | 3 ++-
include/linux/usb/ehci_pdriver.h | 1 +
3 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/mips/cavium-octeon/octeon-platform.c b/arch/mips/cavium-octeon/octeon-platform.c
index eea60b6..12410a2 100644
--- a/arch/mips/cavium-octeon/octeon-platform.c
+++ b/arch/mips/cavium-octeon/octeon-platform.c
@@ -310,6 +310,7 @@ static struct usb_ehci_pdata octeon_ehci_pdata = {
#ifdef __BIG_ENDIAN
.big_endian_mmio = 1,
#endif
+ .dma_mask_64 = 1,
.power_on = octeon_ehci_power_on,
.power_off = octeon_ehci_power_off,
};
@@ -331,8 +332,6 @@ static void __init octeon_ehci_hw_start(struct device *dev)
octeon2_usb_clocks_stop();
}
-static u64 octeon_ehci_dma_mask = DMA_BIT_MASK(64);
-
static int __init octeon_ehci_device_init(void)
{
struct platform_device *pd;
@@ -347,7 +346,6 @@ static int __init octeon_ehci_device_init(void)
if (!pd)
return 0;
- pd->dev.dma_mask = &octeon_ehci_dma_mask;
pd->dev.platform_data = &octeon_ehci_pdata;
octeon_ehci_hw_start(&pd->dev);
diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
index 29b244c..75631b9 100644
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -155,7 +155,8 @@ static int ehci_platform_probe(struct platform_device *dev)
if (!pdata)
pdata = &ehci_platform_defaults;
- err = dma_coerce_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
+ err = dma_coerce_mask_and_coherent(&dev->dev,
+ pdata->dma_mask_64 ? DMA_BIT_MASK(64) : DMA_BIT_MASK(32));
if (err)
return err;
diff --git a/include/linux/usb/ehci_pdriver.h b/include/linux/usb/ehci_pdriver.h
index 7eb4dcd..f69529e 100644
--- a/include/linux/usb/ehci_pdriver.h
+++ b/include/linux/usb/ehci_pdriver.h
@@ -45,6 +45,7 @@ struct usb_ehci_pdata {
unsigned big_endian_desc:1;
unsigned big_endian_mmio:1;
unsigned no_io_watchdog:1;
+ unsigned dma_mask_64:1;
/* Turn on all power and clocks */
int (*power_on)(struct platform_device *pdev);
--
1.7.9.5
