[PATCH] usb:host:xhci-plat: 64-bit dma addressing support

2014-11-03 Thread Feng Kan 
Use dma_addr_t to support 64-bit plaforms, which access beyond 32 bit
address range.

Signed-off-by: Bao Truong btru...@apm.com
Signed-off-by: Feng Kan f...@apm.com
---
 drivers/usb/host/xhci-plat.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 01d1862..8cf83f0 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -97,13 +97,14 @@ static int xhci_plat_probe(struct platform_device *pdev)
}
 
/* Initialize dma_mask and coherent_dma_mask to 32-bits */
-   ret = dma_set_coherent_mask(pdev-dev, DMA_BIT_MASK(32));
+   ret = dma_set_coherent_mask(pdev-dev,
+   DMA_BIT_MASK(sizeof(dma_addr_t)*8));
if (ret)
return ret;
if (!pdev-dev.dma_mask)
pdev-dev.dma_mask = pdev-dev.coherent_dma_mask;
else
-   dma_set_mask(pdev-dev, DMA_BIT_MASK(32));
+   dma_set_mask(pdev-dev, DMA_BIT_MASK(sizeof(dma_addr_t)*8));
 
hcd = usb_create_hcd(driver, pdev-dev, dev_name(pdev-dev));
if (!hcd)
-- 
1.9.1

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Re: [PATCH] usb:host:xhci-plat: 64-bit dma addressing support

2014-11-03 Thread Greg KH 
On Mon, Nov 03, 2014 at 05:59:28PM -0800, Feng Kan wrote:
 Use dma_addr_t to support 64-bit plaforms, which access beyond 32 bit
 address range.
 
 Signed-off-by: Bao Truong btru...@apm.com
 Signed-off-by: Feng Kan f...@apm.com
 ---
  drivers/usb/host/xhci-plat.c | 5 +++--
  1 file changed, 3 insertions(+), 2 deletions(-)
 
 diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
 index 01d1862..8cf83f0 100644
 --- a/drivers/usb/host/xhci-plat.c
 +++ b/drivers/usb/host/xhci-plat.c
 @@ -97,13 +97,14 @@ static int xhci_plat_probe(struct platform_device *pdev)
   }
  
   /* Initialize dma_mask and coherent_dma_mask to 32-bits */
 - ret = dma_set_coherent_mask(pdev-dev, DMA_BIT_MASK(32));
 + ret = dma_set_coherent_mask(pdev-dev,
 + DMA_BIT_MASK(sizeof(dma_addr_t)*8));

Is the comment still correct now?

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