linux-kernel - [RFC 08/19] dwc3: core: handle event buffers in core

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Date:	Wed, 18 Mar 2015 15:04:13 +0100
From:	Robert Baldyga <r.baldyga@...sung.com>
To:	balbi@...com
Cc:	gregkh@...uxfoundation.org, myungjoo.ham@...sung.com,
	cw00.choi@...sung.com, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org, m.szyprowski@...sung.com,
	Robert Baldyga <r.baldyga@...sung.com>
Subject: [RFC 08/19] dwc3: core: handle event buffers in core_init/exit

This change is part of preparation for OTG feature. Event buffers setup
and cleanup are parts of core_init/exit process, so when core_init/exit
will be called in many places it would be better to have entire procedure
inside these functions instead of calling event_buffers_setup/cleanup
in each place separately.

Signed-off-by: Robert Baldyga <r.baldyga@...sung.com>
---
 drivers/usb/dwc3/core.c | 23 ++++++++++-------------
 1 file changed, 10 insertions(+), 13 deletions(-)

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index b040ce0..56a4922 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -565,6 +565,12 @@ static int dwc3_core_init(struct dwc3 *dwc)
 	if (ret)
 		goto err2;
 
+	ret = dwc3_event_buffers_setup(dwc);
+	if (ret) {
+		dev_err(dwc->dev, "failed to setup event buffers\n");
+		goto err2;
+	}
+
 	return 0;
 
 err2:
@@ -582,6 +588,7 @@ err0:
 
 static void dwc3_core_exit(struct dwc3 *dwc)
 {
+	dwc3_event_buffers_cleanup(dwc);
 	dwc3_free_scratch_buffers(dwc);
 	usb_phy_shutdown(dwc->usb2_phy);
 	usb_phy_shutdown(dwc->usb3_phy);
@@ -925,31 +932,22 @@ static int dwc3_probe(struct platform_device *pdev)
 	if (ret < 0)
 		goto err3;
 
-	ret = dwc3_event_buffers_setup(dwc);
-	if (ret) {
-		dev_err(dwc->dev, "failed to setup event buffers\n");
-		goto err4;
-	}
-
 	ret = dwc3_core_init_mode(dwc);
 	if (ret)
-		goto err5;
+		goto err4;
 
 	ret = dwc3_debugfs_init(dwc);
 	if (ret) {
 		dev_err(dev, "failed to initialize debugfs\n");
-		goto err6;
+		goto err5;
 	}
 
 	pm_runtime_allow(dev);
 
 	return 0;
 
-err6:
-	dwc3_core_exit_mode(dwc);
-
 err5:
-	dwc3_event_buffers_cleanup(dwc);
+	dwc3_core_exit_mode(dwc);
 
 err4:
 	phy_power_off(dwc->usb3_generic_phy);
@@ -990,7 +988,6 @@ static int dwc3_remove(struct platform_device *pdev)
 
 	dwc3_debugfs_exit(dwc);
 	dwc3_core_exit_mode(dwc);
-	dwc3_event_buffers_cleanup(dwc);
 	dwc3_free_event_buffers(dwc);
 
 	usb_phy_set_suspend(dwc->usb2_phy, 1);
-- 
1.9.1

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