usb: ehci: exynos: variable node should be signed

THe variable node is assigned to the return value of a function that
returns an int. It is tested for being negative and then passed as an
argument to a function that takes an int. So 'node' should not be
declared as unsigned. Correct it.

This issue was found by Smatch.

Signed-off-by: Andrew Goodbody <andrew.goodbody@linaro.org>
Reviewed-by: Marek Vasut <marek.vasut@mailbox.org>

diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c
index 1e4a5a0b6f6ce3ff7e14ec16a5250eddb5a13139..e1fc04efd2e986f11eb2e3add74da84dce74f208 100644 (file)
--- a/drivers/usb/host/ehci-exynos.c
+++ b/drivers/usb/host/ehci-exynos.c
@@ -47,8 +47,7 @@ static int ehci_usb_of_to_plat(struct udevice *dev)
 {
        struct exynos_ehci_plat *plat = dev_get_plat(dev);
        const void *blob = gd->fdt_blob;
-       unsigned int node;
-       int depth;
+       int node, depth;
 
        /*
         * Get the base address for XHCI controller from the device node