linux-kernel - [PATCH 5.4 035/177] usb: common: usb-conn-gpio: Dont log an error on probe deferral

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Message-Id: <20191216174828.552457581@linuxfoundation.org>
Date:   Mon, 16 Dec 2019 18:48:11 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Nagarjuna Kristam <nkristam@...dia.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-usb@...r.kernel.org,
        Bryan ODonoghue <bryan.odonoghue@...aro.org>
Subject: [PATCH 5.4 035/177] usb: common: usb-conn-gpio: Dont log an error on probe deferral

From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>

commit 59120962e4be4f72be537adb17da6881c4b3797c upstream.

This patch makes the printout of the error message for failing to get a
VBUS regulator handle conditional on the error code being something other
than -EPROBE_DEFER.

Deferral is a normal thing, we don't need an error message for this.

Cc: Chunfeng Yun <chunfeng.yun@...iatek.com>
Cc: Nagarjuna Kristam <nkristam@...dia.com>
Cc: Linus Walleij <linus.walleij@...aro.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-usb@...r.kernel.org
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Cc: stable <stable@...r.kernel.org>
Link: https://lore.kernel.org/r/20191128134358.3880498-2-bryan.odonoghue@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/usb/common/usb-conn-gpio.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/usb/common/usb-conn-gpio.c
+++ b/drivers/usb/common/usb-conn-gpio.c
@@ -156,7 +156,8 @@ static int usb_conn_probe(struct platfor
 
 	info->vbus = devm_regulator_get(dev, "vbus");
 	if (IS_ERR(info->vbus)) {
-		dev_err(dev, "failed to get vbus\n");
+		if (PTR_ERR(info->vbus) != -EPROBE_DEFER)
+			dev_err(dev, "failed to get vbus\n");
 		return PTR_ERR(info->vbus);
 	}