[PATCH 2/5] usb: xhci: plat: Create both HCDs before adding them

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



As xhci_hcd is now allocated by usb_create_hcd(), we don't
need to add the primary HCD before creating the shared HCD.

Creating the shared HCD before adding the primary HCD is particularly
useful for the OTG use case so that we know at the OTG core if
the HCD is in single configuration or dual (primary + shared)
configuration.

Signed-off-by: Roger Quadros <rogerq@xxxxxx>
---
 drivers/usb/host/xhci-plat.c | 24 +++++++++++-------------
 1 file changed, 11 insertions(+), 13 deletions(-)

diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 517fb4c..00f23f5 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -136,21 +136,15 @@ static int xhci_plat_probe(struct platform_device *pdev)
 			goto put_hcd;
 	}
 
-	ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
-	if (ret)
-		goto disable_clk;
-
 	device_wakeup_enable(hcd->self.controller);
 
-	/* USB 2.0 roothub is stored in the platform_device now. */
-	hcd = platform_get_drvdata(pdev);
 	xhci = hcd_to_xhci(hcd);
 	xhci->clk = clk;
 	xhci->shared_hcd = usb_create_shared_hcd(driver, &pdev->dev,
 			dev_name(&pdev->dev), hcd);
 	if (!xhci->shared_hcd) {
 		ret = -ENOMEM;
-		goto dealloc_usb2_hcd;
+		goto disable_clk;
 	}
 
 	if ((node && of_property_read_bool(node, "usb3-lpm-capable")) ||
@@ -160,18 +154,22 @@ static int xhci_plat_probe(struct platform_device *pdev)
 	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);
+	ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
 	if (ret)
 		goto put_usb3_hcd;
 
-	return 0;
+	ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);
+	if (ret)
+		goto dealloc_usb2_hcd;
 
-put_usb3_hcd:
-	usb_put_hcd(xhci->shared_hcd);
+	return 0;
 
 dealloc_usb2_hcd:
 	usb_remove_hcd(hcd);
 
+put_usb3_hcd:
+	usb_put_hcd(xhci->shared_hcd);
+
 disable_clk:
 	if (!IS_ERR(clk))
 		clk_disable_unprepare(clk);
@@ -189,9 +187,9 @@ static int xhci_plat_remove(struct platform_device *dev)
 	struct clk *clk = xhci->clk;
 
 	usb_remove_hcd(xhci->shared_hcd);
-	usb_put_hcd(xhci->shared_hcd);
-
 	usb_remove_hcd(hcd);
+
+	usb_put_hcd(xhci->shared_hcd);
 	if (!IS_ERR(clk))
 		clk_disable_unprepare(clk);
 	usb_put_hcd(hcd);
-- 
2.1.0

--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Media]     [Linux Input]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Old Linux USB Devel Archive]

  Powered by Linux