[PATCH v2] USB: Gadget: fsl driver pullup fix

From: Suresh Gupta
Date: Thu Mar 20 2014 - 10:59:22 EST

This fix the fsl usb gadget driver in a way that the usb device
will be only "pulled up" on requests only when vbus is powered

Signed-off-by: Suresh Gupta <suresh.gupta@xxxxxxxxxxxxx>
Changes from previous version:
* Removed re-factored code, Will send another patch for re-factoring
duplicated code
* Changed Description

drivers/usb/gadget/fsl_udc_core.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c
index 35cb972..49d66779 100644
--- a/drivers/usb/gadget/fsl_udc_core.c
+++ b/drivers/usb/gadget/fsl_udc_core.c
@@ -1219,6 +1219,10 @@ static int fsl_pullup(struct usb_gadget *gadget, int is_on)
struct fsl_udc *udc;

udc = container_of(gadget, struct fsl_udc, gadget);
+ if(!udc->vbus_active)
+ return -EOPNOTSUPP;
udc->softconnect = (is_on != 0);
if (can_pullup(udc))
fsl_writel((fsl_readl(&dr_regs->usbcmd) | USB_CMD_RUN_STOP),

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