linux-kernel - [PATCH 4.19 38/79] usb: dwc2: fix wrong order of phy_power_on and phy

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Message-Id: <20220913140350.748903402@linuxfoundation.org>
Date:   Tue, 13 Sep 2022 16:06:56 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Minas Harutyunyan <hminas@...opsys.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Heiner Kallweit <hkallweit1@...il.com>
Subject: [PATCH 4.19 38/79] usb: dwc2: fix wrong order of phy_power_on and phy_init

From: Heiner Kallweit <hkallweit1@...il.com>

commit f9b995b49a07bd0d43b0e490f59be84415c745ae upstream.

Since 1599069a62c6 ("phy: core: Warn when phy_power_on is called before
phy_init") the driver complains. In my case (Amlogic SoC) the warning
is: phy phy-fe03e000.phy.2: phy_power_on was called before phy_init
So change the order of the two calls. The same change has to be done
to the order of phy_exit() and phy_power_off().

Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c")
Cc: stable@...r.kernel.org
Acked-by: Minas Harutyunyan <hminas@...opsys.com>
Acked-by: Marek Szyprowski <m.szyprowski@...sung.com>
Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
Link: https://lore.kernel.org/r/dfcc6b40-2274-4e86-e73c-5c5e6aa3e046@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/usb/dwc2/platform.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/drivers/usb/dwc2/platform.c
+++ b/drivers/usb/dwc2/platform.c
@@ -142,9 +142,9 @@ static int __dwc2_lowlevel_hw_enable(str
 	} else if (hsotg->plat && hsotg->plat->phy_init) {
 		ret = hsotg->plat->phy_init(pdev, hsotg->plat->phy_type);
 	} else {
-		ret = phy_power_on(hsotg->phy);
+		ret = phy_init(hsotg->phy);
 		if (ret == 0)
-			ret = phy_init(hsotg->phy);
+			ret = phy_power_on(hsotg->phy);
 	}
 
 	return ret;
@@ -176,9 +176,9 @@ static int __dwc2_lowlevel_hw_disable(st
 	} else if (hsotg->plat && hsotg->plat->phy_exit) {
 		ret = hsotg->plat->phy_exit(pdev, hsotg->plat->phy_type);
 	} else {
-		ret = phy_exit(hsotg->phy);
+		ret = phy_power_off(hsotg->phy);
 		if (ret == 0)
-			ret = phy_power_off(hsotg->phy);
+			ret = phy_exit(hsotg->phy);
 	}
 	if (ret)
 		return ret;