From 04db1d2057c8799ab4e732246ed45ca0b283aa6f Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Mon, 2 Sep 2019 15:50:35 +0100 Subject: [PATCH] usb: cdns3: fix missing assignment of ret before error check on ret 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. Addresses-Coverity: ("'Constant' variable guards dead code") Fixes: 7733f6c32e36 ("usb: cdns3: Add Cadence USB3 DRD Driver") Signed-off-by: Colin Ian King Link: https://lore.kernel.org/r/20190902145035.18200-1-colin.king@canonical.com Signed-off-by: Greg Kroah-Hartman --- 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 9536908..3a9349d 100644 --- a/drivers/usb/cdns3/gadget.c +++ b/drivers/usb/cdns3/gadget.c @@ -2152,7 +2152,7 @@ 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); @@ -2160,8 +2160,8 @@ 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; -- 2.7.4