usb: musb: fix remote wakeup racing with suspend

[mirror_ubuntu-bionic-kernel.git] / drivers / usb / misc / usb3503.c

diff --git a/drivers/usb/misc/usb3503.c b/drivers/usb/misc/usb3503.c
index 465dbf68b4633d438e858260d5db12d6bc0ce44e..f723f7b8c9ac4cdb65e5beb9a401ac3ce64f99e2 100644 (file)
--- a/drivers/usb/misc/usb3503.c
+++ b/drivers/usb/misc/usb3503.c
@@ -279,6 +279,8 @@ static int usb3503_probe(struct usb3503 *hub)
        if (gpio_is_valid(hub->gpio_reset)) {
                err = devm_gpio_request_one(dev, hub->gpio_reset,
                                GPIOF_OUT_INIT_LOW, "usb3503 reset");
+               /* Datasheet defines a hardware reset to be at least 100us */
+               usleep_range(100, 10000);
                if (err) {
                        dev_err(dev,
                                "unable to request GPIO %d as reset pin (%d)\n",