Thread (15 messages) 15 messages, 4 authors, 2020-07-22
STALE2158d
Revisions (3)
  1. v1 [diff vs current]
  2. v2 current
  3. v3 [diff vs current]

[PATCH v2 7/7] usb: bdc: Use devm_clk_get_optional()

From: Al Cooper <alcooperx@gmail.com>
Date: 2020-07-21 14:44:09
Also in: linux-usb, lkml
Subsystem: broadcom bdc driver, the rest, usb subsystem · Maintainers: Justin Chen, Al Cooper, Linus Torvalds, Greg Kroah-Hartman

From: Florian Fainelli <f.fainelli@gmail.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 <f.fainelli@gmail.com>
Signed-off-by: Al Cooper <alcooperx@gmail.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 c1650247ea39..f6e4026618e8 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
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