linux-kernel - [PATCH v1 2/5] usb: pxa27x_udc: Use devm_clk_get

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Message-Id: <20240822040734.29412-3-liulei.rjpt@vivo.com>
Date: Thu, 22 Aug 2024 12:07:27 +0800
From: Lei Liu <liulei.rjpt@...o.com>
To: Neal Liu <neal_liu@...eedtech.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Joel Stanley <joel@....id.au>,
	Andrew Jeffery <andrew@...econstruct.com.au>,
	Daniel Mack <daniel@...que.org>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	Robert Jarzmik <robert.jarzmik@...e.fr>,
	Conor Dooley <conor.dooley@...rochip.com>,
	Daire McNamara <daire.mcnamara@...rochip.com>,
	Bin Liu <b-liu@...com>,
	Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
	linux-aspeed@...ts.ozlabs.org,
	linux-usb@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org
Cc: opensource.kernel@...o.com,
	Lei Liu <liulei.rjpt@...o.com>
Subject: [PATCH v1 2/5] usb: pxa27x_udc: Use devm_clk_get_enabled() helpers

The devm_clk_get_enabled() helpers:
    - call devm_clk_get()
    - call clk_prepare_enable() and register what is needed in order to
     call clk_disable_unprepare() when needed, as a managed resource.

This simplifies the code and avoids calls to clk_disable_unprepare().

---
v0 -> v1
Incorrect usage of clk_prepare_enable() should be 
corrected to devm_clk_get_enabled().

Signed-off-by: Lei Liu <liulei.rjpt@...o.com>
---
 drivers/usb/gadget/udc/pxa27x_udc.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/usb/gadget/udc/pxa27x_udc.c b/drivers/usb/gadget/udc/pxa27x_udc.c
index 1a6317e4b2a3..6e99e75f1acb 100644
--- a/drivers/usb/gadget/udc/pxa27x_udc.c
+++ b/drivers/usb/gadget/udc/pxa27x_udc.c
@@ -2398,14 +2398,10 @@ static int pxa_udc_probe(struct platform_device *pdev)
 	if (udc->gpiod)
 		gpiod_direction_output(udc->gpiod, 0);
 
-	udc->clk = devm_clk_get(&pdev->dev, NULL);
+	udc->clk = devm_clk_get_enabled(&pdev->dev, NULL);
 	if (IS_ERR(udc->clk))
 		return PTR_ERR(udc->clk);
 
-	retval = clk_prepare(udc->clk);
-	if (retval)
-		return retval;
-
 	udc->vbus_sensed = 0;
 
 	the_controller = udc;
-- 
2.34.1