| Message ID | 20180617023018.7952-1-gengdongjiu@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 17/06/18 03:30, Dongjiu Geng wrote: > Initialize the 'err' variate to remove the build warning, > the warning is shown as below: > > drivers/usb/host/xhci-tegra.c: In function 'tegra_xusb_mbox_thread': > drivers/usb/host/xhci-tegra.c:552:6: warning: 'err' may be used uninitialized in this function [-Wuninitialized] > drivers/usb/host/xhci-tegra.c:482:6: note: 'err' was declared here > > Signed-off-by: Dongjiu Geng <gengdongjiu@huawei.com> > Acked-by: Thierry Reding <treding@nvidia.com> > --- > change since v1: > 1. Add 'Acked-by: Thierry Reding <treding@nvidia.com>' > > How to reproduce: > 1. make defconfig ARCH=arm > 2. make -j100 CROSS_COMPILE=arm-linux-gnueabi- ARCH=arm > > Then you can see below warnings: > drivers/usb/host/xhci-tegra.c: In function 'tegra_xusb_mbox_thread': > drivers/usb/host/xhci-tegra.c:552:6: warning: 'err' may be used uninitialized in this function [-Wuninitialized] > drivers/usb/host/xhci-tegra.c:482:6: note: 'err' was declared here > --- > drivers/usb/host/xhci-tegra.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/usb/host/xhci-tegra.c b/drivers/usb/host/xhci-tegra.c > index a8c1d07..d50549f 100644 > --- a/drivers/usb/host/xhci-tegra.c > +++ b/drivers/usb/host/xhci-tegra.c > @@ -481,7 +481,7 @@ static void tegra_xusb_mbox_handle(struct tegra_xusb *tegra, > unsigned long mask; > unsigned int port; > bool idle, enable; > - int err; > + int err = 0; > > memset(&rsp, 0, sizeof(rsp)); Acked-by: Jon Hunter <jonathanh@nvidia.com> Cheers! Jon
diff --git a/drivers/usb/host/xhci-tegra.c b/drivers/usb/host/xhci-tegra.c index a8c1d07..d50549f 100644 --- a/drivers/usb/host/xhci-tegra.c +++ b/drivers/usb/host/xhci-tegra.c @@ -481,7 +481,7 @@ static void tegra_xusb_mbox_handle(struct tegra_xusb *tegra, unsigned long mask; unsigned int port; bool idle, enable; - int err; + int err = 0; memset(&rsp, 0, sizeof(rsp));