From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Date: Mon, 13 Mar 2017 06:25:23 +0000 (+0900)
Subject: usb: host: ehci-platform: set hcd->phy to avoid phy_get() in usb_add_hcd()
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=42a58c9949ddf16e557f5c2e22566f3440e7b60f;p=openwrt%2Fstaging%2Fblogic.git

usb: host: ehci-platform: set hcd->phy to avoid phy_get() in usb_add_hcd()

This patch sets hcd->phy from own phy context to avoid phy_get()
in usb_add_hcd(). Since core/hcd.c manages the phy only in
usb_add_hcd() and usb_remove_hcd(), there is difficult to manage
the phy in suspend/resume.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
index 3214300396a0..bc7b9be12f54 100644
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -221,6 +221,9 @@ static int ehci_platform_probe(struct platform_device *dev)
 			if (IS_ERR(priv->phys[phy_num])) {
 				err = PTR_ERR(priv->phys[phy_num]);
 					goto err_put_hcd;
+			} else if (!hcd->phy) {
+				/* Avoiding phy_get() in usb_add_hcd() */
+				hcd->phy = priv->phys[phy_num];
 			}
 		}