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[v2,1/2] usb: host: ehci-platform: set hcd->phy to avoid phy_get() in usb_add_hcd()

Message ID 1489386324-31353-2-git-send-email-yoshihiro.shimoda.uh@renesas.com (mailing list archive)
State Accepted
Delegated to: Geert Uytterhoeven
Headers show

Commit Message

Yoshihiro Shimoda March 13, 2017, 6:25 a.m. UTC 
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>
---
 drivers/usb/host/ehci-platform.c | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
index a268d9e..2a7b6cb 100644
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -220,6 +220,9 @@  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];
 			}
 		}