From: Manjunath Goudar <manjunath.goudar@xxxxxxxxxx>
Some EHCI HCD drivers may need to override additional fields in struct
hc_driver, such as map_urb_for_dma, unmap_urb_for_dma, hub_control. Add
fields to struct ehci_driver_overrides to allow them to do so.
These new overrides will be used at least by the Tegra EHCI driver.
Signed-off-by: Manjunath Goudar <manjunath.goudar@xxxxxxxxxx>
[swarren, reworked Manjunath's patches to split them more logically]
Signed-off-by: Stephen Warren <swarren@xxxxxxxxxx>
---
drivers/usb/host/ehci-hcd.c | 6 ++++++
drivers/usb/host/ehci.h | 6 ++++++
2 files changed, 12 insertions(+)
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 246e124..da1c224 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -1211,6 +1211,12 @@ void ehci_init_driver(struct hc_driver *drv,
drv->hcd_priv_size += over->extra_priv_size;
if (over->reset)
drv->reset = over->reset;
+ if (over->map_urb_for_dma)
+ drv->map_urb_for_dma = over->map_urb_for_dma;
+ if (over->unmap_urb_for_dma)
+ drv->unmap_urb_for_dma = over->unmap_urb_for_dma;
+ if (over->hub_control)
+ drv->hub_control = over->hub_control;
}
}
EXPORT_SYMBOL_GPL(ehci_init_driver);
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index 7c978b2..918008a 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -795,6 +795,12 @@ static inline u32 hc32_to_cpup (const struct ehci_hcd *ehci, const __hc32 *x)
struct ehci_driver_overrides {
size_t extra_priv_size;
int (*reset)(struct usb_hcd *hcd);
+ int (*map_urb_for_dma)(struct usb_hcd *hcd, struct urb *urb,
+ gfp_t mem_flags);
+ void (*unmap_urb_for_dma)(struct usb_hcd *hcd, struct urb *urb);
+ int (*hub_control)(struct usb_hcd *hcd,
+ u16 typeReq, u16 wValue, u16 wIndex,
+ char *buf, u16 wLength);
};
extern void ehci_init_driver(struct hc_driver *drv,
--
1.7.10.4
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