Hi Colin
>
>From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>
>Currently the check on a non-zero return code in ret is false because
>ret has been initialized to zero. I believe that ret should be assigned
>to the return from the call to readl_poll_timeout_atomic before the
>check on ret. Since ret is being re-assinged the original initialization
>of ret to zero can be removed.
Thanks you for letting me know.
Fortunately that's not a critical bug and has no impact for driver.
I will correct it.
Cheers
Pawell
>
>Addresses-Coverity: ("'Constant' variable guards dead code")
>Fixes: 7733f6c32e36 ("usb: cdns3: Add Cadence USB3 DRD Driver")
>Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>---
> drivers/usb/cdns3/gadget.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
>diff --git a/drivers/usb/cdns3/gadget.c b/drivers/usb/cdns3/gadget.c
>index 3094ad65ffc9..0eb3022838d6 100644
>--- a/drivers/usb/cdns3/gadget.c
>+++ b/drivers/usb/cdns3/gadget.c
>@@ -2154,7 +2154,7 @@ int __cdns3_gadget_ep_clear_halt(struct cdns3_endpoint *priv_ep)
> {
> struct cdns3_device *priv_dev = priv_ep->cdns3_dev;
> struct usb_request *request;
>- int ret = 0;
>+ int ret;
> int val;
>
> trace_cdns3_halt(priv_ep, 0, 0);
>@@ -2162,8 +2162,8 @@ int __cdns3_gadget_ep_clear_halt(struct cdns3_endpoint *priv_ep)
> writel(EP_CMD_CSTALL | EP_CMD_EPRST, &priv_dev->regs->ep_cmd);
>
> /* wait for EPRST cleared */
>- readl_poll_timeout_atomic(&priv_dev->regs->ep_cmd, val,
>- !(val & EP_CMD_EPRST), 1, 100);
>+ ret = readl_poll_timeout_atomic(&priv_dev->regs->ep_cmd, val,
>+ !(val & EP_CMD_EPRST), 1, 100);
> if (ret)
> return -EINVAL;
>
>--
>2.20.1
