From: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Date: Tue, 3 May 2011 08:46:46 +0000 (+0400)
Subject: USB: gpio-vbus: ask for vbus_draw regulator before registering xceiv
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2887ba9e3e478522a4a3f1f64506fe1e8b0c740c;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

USB: gpio-vbus: ask for vbus_draw regulator before registering xceiv

Ask for vbus_draw regulator before registering tranceiver to disallow possible
race between registration and set_power/etc.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/usb/otg/gpio_vbus.c b/drivers/usb/otg/gpio_vbus.c
index 221c44444ec6..52733d9959b4 100644
--- a/drivers/usb/otg/gpio_vbus.c
+++ b/drivers/usb/otg/gpio_vbus.c
@@ -279,6 +279,13 @@ static int __init gpio_vbus_probe(struct platform_device *pdev)
 	}
 	INIT_WORK(&gpio_vbus->work, gpio_vbus_work);
 
+	gpio_vbus->vbus_draw = regulator_get(&pdev->dev, "vbus_draw");
+	if (IS_ERR(gpio_vbus->vbus_draw)) {
+		dev_dbg(&pdev->dev, "can't get vbus_draw regulator, err: %ld\n",
+			PTR_ERR(gpio_vbus->vbus_draw));
+		gpio_vbus->vbus_draw = NULL;
+	}
+
 	/* only active when a gadget is registered */
 	err = otg_set_transceiver(&gpio_vbus->otg);
 	if (err) {
@@ -287,13 +294,6 @@ static int __init gpio_vbus_probe(struct platform_device *pdev)
 		goto err_otg;
 	}
 
-	gpio_vbus->vbus_draw = regulator_get(&pdev->dev, "vbus_draw");
-	if (IS_ERR(gpio_vbus->vbus_draw)) {
-		dev_dbg(&pdev->dev, "can't get vbus_draw regulator, err: %ld\n",
-			PTR_ERR(gpio_vbus->vbus_draw));
-		gpio_vbus->vbus_draw = NULL;
-	}
-
 	return 0;
 err_otg:
 	free_irq(irq, &pdev->dev);