linux-kernel - [PATCH 7/7] usb: bdc: Use devm_clk_get

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Date:   Fri, 17 Jul 2020 11:23:07 -0400
From:   Al Cooper <alcooperx@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Florian Fainelli <florian.fainelli@...adcom.com>,
        Al Cooper <alcooperx@...il.com>, devicetree@...r.kernel.org,
        Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        Sasi Kumar <sasi.kumar@...adcom.com>
Subject: [PATCH 7/7] usb: bdc: Use devm_clk_get_optional()

From: Florian Fainelli <florian.fainelli@...adcom.com>

The BDC clock is optional and we may get an -EPROBE_DEFER error code
which would not be propagated correctly, fix this by using
devm_clk_get_optional().

Signed-off-by: Florian Fainelli <florian.fainelli@...adcom.com>
---
 drivers/usb/gadget/udc/bdc/bdc_core.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/usb/gadget/udc/bdc/bdc_core.c b/drivers/usb/gadget/udc/bdc/bdc_core.c
index ac989adefe9d..5d8bd9129365 100644
--- a/drivers/usb/gadget/udc/bdc/bdc_core.c
+++ b/drivers/usb/gadget/udc/bdc/bdc_core.c
@@ -497,11 +497,9 @@ static int bdc_probe(struct platform_device *pdev)
 
 	dev_dbg(dev, "%s()\n", __func__);
 
-	clk = devm_clk_get(dev, "sw_usbd");
-	if (IS_ERR(clk)) {
-		dev_info(dev, "Clock not found in Device Tree\n");
-		clk = NULL;
-	}
+	clk = devm_clk_get_optional(dev, "sw_usbd");
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
 
 	ret = clk_prepare_enable(clk);
 	if (ret) {
-- 
2.17.1