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@xxxxxxxxxx> --- 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