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

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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>
This commit is contained in:
Dmitry Eremin-Solenikov 2011-05-03 12:46:46 +04:00 committed by Greg Kroah-Hartman
parent ce97cac813
commit 2887ba9e3e
1 changed files with 7 additions and 7 deletions
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14
drivers/usb/otg/gpio_vbus.c
View file

@ -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);