The code handling Get Hub Descriptor request copies data from root_hub_des[],
then overwrites byte 3 with real 'wHubCharacteristics' value. There's no need
to overwrite, we can substitute the real value right into root_hub_des[3].
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
---
The patch is against the 'usb-next' branch of Greg KH's 'usb.git' repo.
drivers/usb/host/fhci-hub.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
Index: usb/drivers/usb/host/fhci-hub.c
===================================================================
--- usb.orig/drivers/usb/host/fhci-hub.c
+++ usb/drivers/usb/host/fhci-hub.c
@@ -32,8 +32,8 @@ static u8 root_hub_des[] = {
0x09, /* blength */
0x29, /* bDescriptorType;hub-descriptor */
0x01, /* bNbrPorts */
- 0x00, /* wHubCharacteristics */
- 0x00,
+ 0x11, /* wHubCharacteristics */
+ 0x00, /* per-port power, no overcurrent */
0x01, /* bPwrOn2pwrGood;2ms */
0x00, /* bHubContrCurrent;0mA */
0x00, /* DeviceRemoveable */
@@ -272,7 +272,6 @@ int fhci_hub_control(struct usb_hcd *hcd
break;
case GetHubDescriptor:
memcpy(buf, root_hub_des, sizeof(root_hub_des));
- buf[3] = 0x11; /* per-port power, no ovrcrnt */
len = (buf[0] < wLength) ? buf[0] : wLength;
break;
case GetHubStatus:
--
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