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From:   Johan Hovold <johan+linaro@kernel.org>
To:     Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
        Johan Hovold <johan+linaro@kernel.org>
Subject: [PATCH 08/11] USB: dwc3: clean up core init error handling
Date:   Tue,  4 Apr 2023 09:25:21 +0200
Message-Id: <20230404072524.19014-9-johan+linaro@kernel.org>
In-Reply-To: <20230404072524.19014-1-johan+linaro@kernel.org>
References: <20230404072524.19014-1-johan+linaro@kernel.org>
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Clean up the core init error handling by using descriptive names for the
error labels and releasing resourcing in reverse order consistently.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/usb/dwc3/core.c | 30 +++++++++++++-----------------
 1 file changed, 13 insertions(+), 17 deletions(-)

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 15405f1f7aef..c499ef026500 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -1008,7 +1008,7 @@ static int dwc3_core_init(struct dwc3 *dwc)
 
 	ret = dwc3_phy_setup(dwc);
 	if (ret)
-		goto err0;
+		return ret;
 
 	if (!dwc->ulpi_ready) {
 		ret = dwc3_core_ulpi_init(dwc);
@@ -1017,7 +1017,7 @@ static int dwc3_core_init(struct dwc3 *dwc)
 				dwc3_core_soft_reset(dwc);
 				ret = -EPROBE_DEFER;
 			}
-			goto err0;
+			return ret;
 		}
 		dwc->ulpi_ready = true;
 	}
@@ -1025,7 +1025,7 @@ static int dwc3_core_init(struct dwc3 *dwc)
 	if (!dwc->phys_ready) {
 		ret = dwc3_core_get_phy(dwc);
 		if (ret)
-			goto err0a;
+			goto err_exit_ulpi;
 		dwc->phys_ready = true;
 	}
 
@@ -1042,7 +1042,7 @@ static int dwc3_core_init(struct dwc3 *dwc)
 
 	ret = dwc3_core_soft_reset(dwc);
 	if (ret)
-		goto err1;
+		goto err_exit_usb3_phy;
 
 	if (hw_mode == DWC3_GHWPARAMS0_MODE_DRD &&
 	    !DWC3_VER_IS_WITHIN(DWC3, ANY, 194A)) {
@@ -1077,16 +1077,16 @@ static int dwc3_core_init(struct dwc3 *dwc)
 	usb_phy_set_suspend(dwc->usb3_phy, 0);
 	ret = phy_power_on(dwc->usb2_generic_phy);
 	if (ret < 0)
-		goto err2;
+		goto err_suspend_usb3_phy;
 
 	ret = phy_power_on(dwc->usb3_generic_phy);
 	if (ret < 0)
-		goto err3;
+		goto err_power_off_usb2_phy;
 
 	ret = dwc3_event_buffers_setup(dwc);
 	if (ret) {
 		dev_err(dwc->dev, "failed to setup event buffers\n");
-		goto err4;
+		goto err_power_off_usb3_phy;
 	}
 
 	/*
@@ -1203,27 +1203,23 @@ static int dwc3_core_init(struct dwc3 *dwc)
 
 	return 0;
 
-err4:
+err_power_off_usb3_phy:
 	phy_power_off(dwc->usb3_generic_phy);
-
-err3:
+err_power_off_usb2_phy:
 	phy_power_off(dwc->usb2_generic_phy);
-
-err2:
-	usb_phy_set_suspend(dwc->usb2_phy, 1);
+err_suspend_usb3_phy:
 	usb_phy_set_suspend(dwc->usb3_phy, 1);
-
-err1:
+	usb_phy_set_suspend(dwc->usb2_phy, 1);
+err_exit_usb3_phy:
 	phy_exit(dwc->usb3_generic_phy);
 err_exit_usb2_phy:
 	phy_exit(dwc->usb2_generic_phy);
 err_shutdown_usb3_phy:
 	usb_phy_shutdown(dwc->usb3_phy);
 	usb_phy_shutdown(dwc->usb2_phy);
-err0a:
+err_exit_ulpi:
 	dwc3_ulpi_exit(dwc);
 
-err0:
 	return ret;
 }
 
-- 
2.39.2