@@ -191,7 +191,7 @@ static int xhci_plat_probe(struct platform_device *pdev)
struct device *sysdev, *tmpdev;
struct xhci_hcd *xhci;
struct resource *res;
- struct usb_hcd *hcd;
+ struct usb_hcd *hcd, *usb3_hcd;
int ret;
int irq;
struct xhci_plat_priv *priv = NULL;
@@ -344,21 +344,26 @@ static int xhci_plat_probe(struct platform_device *pdev)
if (ret)
goto disable_usb_phy;
- xhci->shared_hcd = __usb_create_hcd(driver, sysdev, &pdev->dev,
- dev_name(&pdev->dev), hcd);
- if (!xhci->shared_hcd) {
- ret = -ENOMEM;
- goto dealloc_usb2_hcd;
- }
+ if (xhci->needs_shared_hcd) {
+ xhci->shared_hcd = __usb_create_hcd(driver, sysdev, &pdev->dev,
+ dev_name(&pdev->dev), hcd);
+ if (!xhci->shared_hcd) {
+ ret = -ENOMEM;
+ goto dealloc_usb2_hcd;
+ }
- xhci->shared_hcd->tpl_support = hcd->tpl_support;
+ xhci->shared_hcd->tpl_support = hcd->tpl_support;
+ }
- if (HCC_MAX_PSA(xhci->hcc_params) >= 4)
- xhci->shared_hcd->can_do_streams = 1;
+ usb3_hcd = xhci_get_usb3_hcd(xhci);
+ if (usb3_hcd && HCC_MAX_PSA(xhci->hcc_params) >= 4)
+ usb3_hcd->can_do_streams = 1;
- ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);
- if (ret)
- goto put_usb3_hcd;
+ if (xhci->shared_hcd) {
+ ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);
+ if (ret)
+ goto put_usb3_hcd;
+ }
device_enable_async_suspend(&pdev->dev);
pm_runtime_put_noidle(&pdev->dev);
This patch prepares xhci-plat for the following scenario - If either of the root hubs has no ports, then omit shared hcd - Main hcd can be USB3 if there are no USB2 ports Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> --- drivers/usb/host/xhci-plat.c | 31 ++++++++++++++++++------------- 1 file changed, 18 insertions(+), 13 deletions(-)