[PATCH -next resend 5/5] usb: musb: sunxi: Switch to use dev_err_probe() helper

[Yang Yingliang <yangyingliang@huawei.com>]

In the probe path, dev_err() can be replaced with dev_err_probe()
which will check if error code is -EPROBE_DEFER and prints the
error name. It also sets the defer probe reason which can be
checked later through debugfs. It's more simple in error path.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
---
 drivers/usb/musb/sunxi.c | 29 +++++++++--------------------
 1 file changed, 9 insertions(+), 20 deletions(-)

diff --git a/drivers/usb/musb/sunxi.c b/drivers/usb/musb/sunxi.c
index 961c858fb349..7f9a999cd5ff 100644
--- a/drivers/usb/musb/sunxi.c
+++ b/drivers/usb/musb/sunxi.c
@@ -743,31 +743,20 @@ static int sunxi_musb_probe(struct platform_device *pdev)
 
 	if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags)) {
 		glue->rst = devm_reset_control_get(&pdev->dev, NULL);
-		if (IS_ERR(glue->rst)) {
-			if (PTR_ERR(glue->rst) == -EPROBE_DEFER)
-				return -EPROBE_DEFER;
-			dev_err(&pdev->dev, "Error getting reset %ld\n",
-				PTR_ERR(glue->rst));
-			return PTR_ERR(glue->rst);
-		}
+		if (IS_ERR(glue->rst))
+			return dev_err_probe(&pdev->dev, PTR_ERR(glue->rst),
+					     "Error getting reset\n");
 	}
 
 	glue->extcon = extcon_get_edev_by_phandle(&pdev->dev, 0);
-	if (IS_ERR(glue->extcon)) {
-		if (PTR_ERR(glue->extcon) == -EPROBE_DEFER)
-			return -EPROBE_DEFER;
-		dev_err(&pdev->dev, "Invalid or missing extcon\n");
-		return PTR_ERR(glue->extcon);
-	}
+	if (IS_ERR(glue->extcon))
+		return dev_err_probe(&pdev->dev, PTR_ERR(glue->extcon),
+				     "Invalid or missing extcon\n");
 
 	glue->phy = devm_phy_get(&pdev->dev, "usb");
-	if (IS_ERR(glue->phy)) {
-		if (PTR_ERR(glue->phy) == -EPROBE_DEFER)
-			return -EPROBE_DEFER;
-		dev_err(&pdev->dev, "Error getting phy %ld\n",
-			PTR_ERR(glue->phy));
-		return PTR_ERR(glue->phy);
-	}
+	if (IS_ERR(glue->phy))
+		return dev_err_probe(&pdev->dev, PTR_ERR(glue->phy),
+				     "Error getting phy\n");
 
 	glue->usb_phy = usb_phy_generic_register();
 	if (IS_ERR(glue->usb_phy)) {
-- 
2.25.1