linux-kernel - [PATCH v2 2/7] usb: xhci: plat: attach the usb

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Date:	Mon, 7 Dec 2015 20:49:19 +0800
From:	Jisheng Zhang <jszhang@...vell.com>
To:	<mathias.nyman@...el.com>, <gregkh@...uxfoundation.org>
CC:	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-usb@...r.kernel.org>, Jisheng Zhang <jszhang@...vell.com>
Subject: [PATCH v2 2/7] usb: xhci: plat: attach the usb_phy to the correct hcd

Commit 7b8ef22ea547 ("usb: xhci: plat: Add USB phy support") adds the
usb_phy for usb3, but it attached the usb_phy to incorrect hcd. The
xhci->shared_hcd is the hcd for usb3, this patch fixes this issue
by attach the usb_phy to the xhci->shared_hcd.

Signed-off-by: Jisheng Zhang <jszhang@...vell.com>
---
 drivers/usb/host/xhci-plat.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index b566304..a8c465a 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -82,6 +82,7 @@ static int xhci_plat_probe(struct platform_device *pdev)
 	struct resource         *res;
 	struct usb_hcd		*hcd;
 	struct clk              *clk;
+	struct usb_phy		*usb_phy;
 	int			ret;
 	int			irq;
 
@@ -162,17 +163,18 @@ static int xhci_plat_probe(struct platform_device *pdev)
 	if (HCC_MAX_PSA(xhci->hcc_params) >= 4)
 		xhci->shared_hcd->can_do_streams = 1;
 
-	hcd->usb_phy = devm_usb_get_phy_by_phandle(&pdev->dev, "usb-phy", 0);
-	if (IS_ERR(hcd->usb_phy)) {
-		ret = PTR_ERR(hcd->usb_phy);
+	usb_phy = devm_usb_get_phy_by_phandle(&pdev->dev, "usb-phy", 0);
+	if (IS_ERR(usb_phy)) {
+		ret = PTR_ERR(usb_phy);
 		if (ret == -EPROBE_DEFER)
 			goto put_usb3_hcd;
-		hcd->usb_phy = NULL;
+		usb_phy = NULL;
 	} else {
-		ret = usb_phy_init(hcd->usb_phy);
+		ret = usb_phy_init(usb_phy);
 		if (ret)
 			goto put_usb3_hcd;
 	}
+	xhci->shared_hcd->usb_phy = usb_phy;
 
 	ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
 	if (ret)
@@ -189,7 +191,7 @@ dealloc_usb2_hcd:
 	usb_remove_hcd(hcd);
 
 disable_usb_phy:
-	usb_phy_shutdown(hcd->usb_phy);
+	usb_phy_shutdown(usb_phy);
 
 put_usb3_hcd:
 	usb_put_hcd(xhci->shared_hcd);
@@ -211,7 +213,7 @@ static int xhci_plat_remove(struct platform_device *dev)
 	struct clk *clk = xhci->clk;
 
 	usb_remove_hcd(xhci->shared_hcd);
-	usb_phy_shutdown(hcd->usb_phy);
+	usb_phy_shutdown(xhci->shared_hcd->usb_phy);
 
 	usb_remove_hcd(hcd);
 	usb_put_hcd(xhci->shared_hcd);
-- 
2.6.2

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