[PATCH 1/5] usb: host: xhci-plat: create shared hcd after having added main hcd

[Heiner Kallweit]

This patch is in preparation of an extension where in case of a
root hub with no ports no shared hcd will be created.
Whether one of the root hubs has no ports we figure our in
usb_add_hcd() for the primary hcd. Therefore create the shared
hcd only after this call.

Signed-off-by: Heiner Kallweit <hkallweit1 at gmail.com>
---
 drivers/usb/host/xhci-plat.c | 28 +++++++++++++++-------------
 1 file changed, 15 insertions(+), 13 deletions(-)

diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 8094da348..484c7fe3e 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -294,12 +294,6 @@ static int xhci_plat_probe(struct platform_device *pdev)
 	device_set_wakeup_capable(&pdev->dev, true);
 
 	xhci->main_hcd = hcd;
-	xhci->shared_hcd = __usb_create_hcd(driver, sysdev, &pdev->dev,
-			dev_name(&pdev->dev), hcd);
-	if (!xhci->shared_hcd) {
-		ret = -ENOMEM;
-		goto disable_clk;
-	}
 
 	/* imod_interval is the interrupt moderation value in nanoseconds. */
 	xhci->imod_interval = 40000;
@@ -324,16 +318,15 @@ static int xhci_plat_probe(struct platform_device *pdev)
 	if (IS_ERR(hcd->usb_phy)) {
 		ret = PTR_ERR(hcd->usb_phy);
 		if (ret == -EPROBE_DEFER)
-			goto put_usb3_hcd;
+			goto disable_clk;
 		hcd->usb_phy = NULL;
 	} else {
 		ret = usb_phy_init(hcd->usb_phy);
 		if (ret)
-			goto put_usb3_hcd;
+			goto disable_clk;
 	}
 
 	hcd->tpl_support = of_usb_host_tpl_support(sysdev->of_node);
-	xhci->shared_hcd->tpl_support = hcd->tpl_support;
 
 	if (priv) {
 		ret = xhci_priv_plat_setup(hcd);
@@ -351,12 +344,21 @@ 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;
+	}
+
+	xhci->shared_hcd->tpl_support = hcd->tpl_support;
+
 	if (HCC_MAX_PSA(xhci->hcc_params) >= 4)
 		xhci->shared_hcd->can_do_streams = 1;
 
 	ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);
 	if (ret)
-		goto dealloc_usb2_hcd;
+		goto put_usb3_hcd;
 
 	device_enable_async_suspend(&pdev->dev);
 	pm_runtime_put_noidle(&pdev->dev);
@@ -370,15 +372,15 @@ static int xhci_plat_probe(struct platform_device *pdev)
 	return 0;
 
 
+put_usb3_hcd:
+	usb_put_hcd(xhci->shared_hcd);
+
 dealloc_usb2_hcd:
 	usb_remove_hcd(hcd);
 
 disable_usb_phy:
 	usb_phy_shutdown(hcd->usb_phy);
 
-put_usb3_hcd:
-	usb_put_hcd(xhci->shared_hcd);
-
 disable_clk:
 	clk_disable_unprepare(xhci->clk);
 
-- 
2.35.1