From 6f17f74b3d8345663f5fcfd834145685110075bd Mon Sep 17 00:00:00 2001 From: Pratyush Anand Date: Mon, 2 Jul 2012 10:21:55 +0530 Subject: [PATCH] usb: dwc3: return error in case of run/stop timeout Although timeout has never been experienced, still to make it meaningful, its better to return error if it ever occurs. Signed-off-by: Pratyush Anand Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 39626e366a82..aedc1c5cfac1 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1408,7 +1408,7 @@ static int dwc3_gadget_set_selfpowered(struct usb_gadget *g, return 0; } -static void dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on) +static int dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on) { u32 reg; u32 timeout = 500; @@ -1440,7 +1440,7 @@ static void dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on) } timeout--; if (!timeout) - break; + return -ETIMEDOUT; udelay(1); } while (1); @@ -1448,20 +1448,23 @@ static void dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on) dwc->gadget_driver ? dwc->gadget_driver->function : "no-function", is_on ? "connect" : "disconnect"); + + return 0; } static int dwc3_gadget_pullup(struct usb_gadget *g, int is_on) { struct dwc3 *dwc = gadget_to_dwc(g); unsigned long flags; + int ret; is_on = !!is_on; spin_lock_irqsave(&dwc->lock, flags); - dwc3_gadget_run_stop(dwc, is_on); + ret = dwc3_gadget_run_stop(dwc, is_on); spin_unlock_irqrestore(&dwc->lock, flags); - return 0; + return ret; } static int dwc3_gadget_start(struct usb_gadget *g, -- GitLab