[PATCH 1/2] usb: dwc3: Use devres to get clocks

[PATCH 1/2] usb: dwc3: Use devres to get clocks

[Andrey Smirnov]

Use devres to get clocks and drop explicit clock freeing. No
functional change intended.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Felipe Balbi <balbi@kernel.org>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-usb@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/usb/dwc3/core.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index c9bb93a2c81e..768023a2553c 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -1436,7 +1436,7 @@ static int dwc3_probe(struct platform_device *pdev)
 	if (dev->of_node) {
 		dwc->num_clks = ARRAY_SIZE(dwc3_core_clks);
 
-		ret = clk_bulk_get(dev, dwc->num_clks, dwc->clks);
+		ret = devm_clk_bulk_get(dev, dwc->num_clks, dwc->clks);
 		if (ret == -EPROBE_DEFER)
 			return ret;
 		/*
@@ -1449,7 +1449,7 @@ static int dwc3_probe(struct platform_device *pdev)
 
 	ret = reset_control_deassert(dwc->reset);
 	if (ret)
-		goto put_clks;
+		return ret;
 
 	ret = clk_bulk_prepare(dwc->num_clks, dwc->clks);
 	if (ret)
@@ -1536,8 +1536,6 @@ static int dwc3_probe(struct platform_device *pdev)
 	clk_bulk_unprepare(dwc->num_clks, dwc->clks);
 assert_reset:
 	reset_control_assert(dwc->reset);
-put_clks:
-	clk_bulk_put(dwc->num_clks, dwc->clks);
 
 	return ret;
 }
@@ -1560,7 +1558,6 @@ static int dwc3_remove(struct platform_device *pdev)
 
 	dwc3_free_event_buffers(dwc);
 	dwc3_free_scratch_buffers(dwc);
-	clk_bulk_put(dwc->num_clks, dwc->clks);
 
 	return 0;
 }
-- 
2.21.0

[PATCH 2/2] usb: dwc3: Use clk_bulk_prepare_enable()

[Andrey Smirnov]

Use clk_bulk_prepare_enable() and clk_bulk_disable_unprepare() to
simplify code a bit. No functional change intended.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Felipe Balbi <balbi@kernel.org>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-usb@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/usb/dwc3/core.c | 23 +++++------------------
 1 file changed, 5 insertions(+), 18 deletions(-)

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 768023a2553c..f0e0cbe9254a 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -686,8 +686,7 @@ static void dwc3_core_exit(struct dwc3 *dwc)
 	usb_phy_set_suspend(dwc->usb3_phy, 1);
 	phy_power_off(dwc->usb2_generic_phy);
 	phy_power_off(dwc->usb3_generic_phy);
-	clk_bulk_disable(dwc->num_clks, dwc->clks);
-	clk_bulk_unprepare(dwc->num_clks, dwc->clks);
+	clk_bulk_disable_unprepare(dwc->num_clks, dwc->clks);
 	reset_control_assert(dwc->reset);
 }
 
@@ -1451,14 +1450,10 @@ static int dwc3_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	ret = clk_bulk_prepare(dwc->num_clks, dwc->clks);
+	ret = clk_bulk_prepare_enable(dwc->num_clks, dwc->clks);
 	if (ret)
 		goto assert_reset;
 
-	ret = clk_bulk_enable(dwc->num_clks, dwc->clks);
-	if (ret)
-		goto unprepare_clks;
-
 	if (!dwc3_core_is_valid(dwc)) {
 		dev_err(dwc->dev, "this is not a DesignWare USB3 DRD Core\n");
 		ret = -ENODEV;
@@ -1531,9 +1526,7 @@ static int dwc3_probe(struct platform_device *pdev)
 	pm_runtime_disable(&pdev->dev);
 
 disable_clks:
-	clk_bulk_disable(dwc->num_clks, dwc->clks);
-unprepare_clks:
-	clk_bulk_unprepare(dwc->num_clks, dwc->clks);
+	clk_bulk_disable_unprepare(dwc->num_clks, dwc->clks);
 assert_reset:
 	reset_control_assert(dwc->reset);
 
@@ -1571,14 +1564,10 @@ static int dwc3_core_init_for_resume(struct dwc3 *dwc)
 	if (ret)
 		return ret;
 
-	ret = clk_bulk_prepare(dwc->num_clks, dwc->clks);
+	ret = clk_bulk_prepare_enable(dwc->num_clks, dwc->clks);
 	if (ret)
 		goto assert_reset;
 
-	ret = clk_bulk_enable(dwc->num_clks, dwc->clks);
-	if (ret)
-		goto unprepare_clks;
-
 	ret = dwc3_core_init(dwc);
 	if (ret)
 		goto disable_clks;
@@ -1586,9 +1575,7 @@ static int dwc3_core_init_for_resume(struct dwc3 *dwc)
 	return 0;
 
 disable_clks:
-	clk_bulk_disable(dwc->num_clks, dwc->clks);
-unprepare_clks:
-	clk_bulk_unprepare(dwc->num_clks, dwc->clks);
+	clk_bulk_disable_unprepare(dwc->num_clks, dwc->clks);
 assert_reset:
 	reset_control_assert(dwc->reset);
 
-- 
2.21.0