[PATCH v2 3/3] usb: dwc3: gadget: return error if command sent to DEPCMD register fails

Subbaraya Sundeep Bhatta
2015-05-21T10:32:21Z

We need to return error to caller if command is not sent to
controller succesfully.

Signed-off-by: Subbaraya Sundeep Bhatta <sbhatta@xilinx.com>
Fixes: 72246da40f37 (usb: Introduce DesignWare USB3 DRD Driver)
Cc: <stable@vger.kernel.org>
---
v2 changes:
Added Fixes and Cc in commit message.

drivers/usb/dwc3/gadget.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index fcbe120..55b5edc 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -330,6 +330,8 @@ int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
dwc3_trace(trace_dwc3_gadget,
"Command Complete --> %d",
DWC3_DEPCMD_STATUS(reg));
+ if (DWC3_DEPCMD_STATUS(reg))
+ return -EINVAL;
return 0;
}

--
1.7.4