This patch avoids that the following warnings are reported when building
with W=1:

net/core/dev_ioctl.c:378: warning: Function parameter or member 'ifr' not 
described in 'dev_ioctl'
net/core/dev_ioctl.c:378: warning: Function parameter or member 'need_copyout' 
not described in 'dev_ioctl'
net/core/dev_ioctl.c:378: warning: Excess function parameter 'arg' description 
in 'dev_ioctl'

Cc: Al Viro <v...@zeniv.linux.org.uk>
Fixes: 44c02a2c3dc5 ("dev_ioctl(): move copyin/copyout to callers") # v4.16.
Signed-off-by: Bart Van Assche <bvanass...@acm.org>
---
 net/core/dev_ioctl.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/core/dev_ioctl.c b/net/core/dev_ioctl.c
index 31380fd5a4e2..5163d900bb4f 100644
--- a/net/core/dev_ioctl.c
+++ b/net/core/dev_ioctl.c
@@ -366,7 +366,8 @@ EXPORT_SYMBOL(dev_load);
  *     dev_ioctl       -       network device ioctl
  *     @net: the applicable net namespace
  *     @cmd: command to issue
- *     @arg: pointer to a struct ifreq in user space
+ *     @ifr: pointer to a struct ifreq in user space
+ *     @need_copyout: whether or not copy_to_user() should be called
  *
  *     Issue ioctl functions to devices. This is normally called by the
  *     user space syscall interfaces but can sometimes be useful for
-- 
2.21.0.155.ge902e9bcae20

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