can: pch_can: fix invalid error codes

[pandora-kernel.git] / drivers / net / tun.c

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 7bea9c6..a12c9bf 100644 (file)
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1243,10 +1243,12 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd,
        int vnet_hdr_sz;
        int ret;
 
-       if (cmd == TUNSETIFF || _IOC_TYPE(cmd) == 0x89)
+       if (cmd == TUNSETIFF || _IOC_TYPE(cmd) == 0x89) {
                if (copy_from_user(&ifr, argp, ifreq_len))
                        return -EFAULT;
-
+       } else {
+               memset(&ifr, 0, sizeof(ifr));
+       }
        if (cmd == TUNGETFEATURES) {
                /* Currently this just means: "what IFF flags are valid?".
                 * This is needed because we never checked for invalid flags on