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usb: Store bus type in usb_hcd, not in driver flags. 

The xHCI driver essentially has both a USB 2.0 and a USB 3.0 roothub.  So
setting the HCD_USB3 bits in the hcd->driver->flags is a bit misleading.
Add a new field to usb_hcd, bcdUSB.  Store the result of
hcd->driver->flags & HCD_MASK in it.  Later, when we have the xHCI driver
register the two roothubs, we'll set the usb_hcd->bcdUSB field to HCD_USB2
for the USB 2.0 roothub, and HCD_USB3 for the USB 3.0 roothub.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
This commit is contained in:
Sarah Sharp 2010-12-02 14:45:18 -08:00
parent d673bfcbff
commit 83de4b2b90
2 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/usb/core/hcd.c
View File

@ -507,7 +507,7 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb)
case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
switch (wValue & 0xff00) {
case USB_DT_DEVICE << 8:
switch (hcd->driver->flags & HCD_MASK) {
switch (hcd->speed) {
case HCD_USB3:
bufp = usb3_rh_dev_descriptor;
break;
@ -525,7 +525,7 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb)
patch_protocol = 1;
break;
case USB_DT_CONFIG << 8:
switch (hcd->driver->flags & HCD_MASK) {
switch (hcd->speed) {
case HCD_USB3:
bufp = ss_rh_config_descriptor;
len = sizeof ss_rh_config_descriptor;
@ -2216,6 +2216,7 @@ struct usb_hcd *usb_create_hcd (const struct hc_driver *driver,
#endif
hcd->driver = driver;
hcd->speed = driver->flags & HCD_MASK;
hcd->product_desc = (driver->product_desc) ? driver->product_desc :
"USB Host Controller";
return hcd;
@ -2325,7 +2326,7 @@ int usb_add_hcd(struct usb_hcd *hcd,
}
hcd->self.root_hub = rhdev;
switch (hcd->driver->flags & HCD_MASK) {
switch (hcd->speed) {
case HCD_USB11:
rhdev->speed = USB_SPEED_FULL;
break;

4
include/linux/usb/hcd.h
View File

@ -76,6 +76,10 @@ struct usb_hcd {
struct kref kref; /* reference counter */
const char *product_desc; /* product/vendor string */
int speed; /* Speed for this roothub.
* May be different from
* hcd->driver->flags & HCD_MASK
*/
char irq_descr[24]; /* driver + bus # */
struct timer_list rh_timer; /* drives root-hub polling */