Fix the sparse error: cast removes address space of expression and
add __user annotation to the driver's ethtool_ioctl().

Signed-off-by: Martin Kepplinger <mart...@posteo.de>
---
Beyond that, how would you include socket.c's ethtool_ioctl() here?

thanks for looking at these tiny changes.

 drivers/staging/vt6655/device_main.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/vt6655/device_main.c 
b/drivers/staging/vt6655/device_main.c
index 1d3908d..740690e 100644
--- a/drivers/staging/vt6655/device_main.c
+++ b/drivers/staging/vt6655/device_main.c
@@ -3067,7 +3067,7 @@ static int  device_ioctl(struct net_device *dev, struct 
ifreq *rq, int cmd) {
                break;
 
        case SIOCETHTOOL:
-               return ethtool_ioctl(dev, (void *)rq->ifr_data);
+               return ethtool_ioctl(dev, &rq->ifr_data);
                // All other calls are currently unsupported
 
        default:
@@ -3103,7 +3103,7 @@ static int  device_ioctl(struct net_device *dev, struct 
ifreq *rq, int cmd) {
        return rc;
 }
 
-static int ethtool_ioctl(struct net_device *dev, void *useraddr)
+static int ethtool_ioctl(struct net_device *dev, void __user *useraddr)
 {
        u32 ethcmd;
 
-- 
1.7.10.4

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