From oliver@neukum.org Wed Nov 12 11:17:26 2008 From: Oliver Neukum Date: Fri, 1 Feb 2008 22:44:40 +0100 Subject: USB: power availability check for berry_charge To: Greg KH , linux-usb@vger.kernel.org Message-ID: <200802012244.41310.oliver@neukum.org> Content-Disposition: inline this introduces a sanity check into berry_charge to give up before damage is done if we lack juice. Signed-off-by: Oliver Neukum Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/berry_charge.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/drivers/usb/misc/berry_charge.c +++ b/drivers/usb/misc/berry_charge.c @@ -123,6 +123,11 @@ static int berry_probe(struct usb_interf { struct usb_device *udev = interface_to_usbdev(intf); + if (udev->bus_mA < 500) { + dbg(&udev->dev, "Not enough power to charge available\n"); + return -ENODEV; + } + dbg(&udev->dev, "Power is set to %dmA\n", udev->actconfig->desc.bMaxPower * 2);