Re: [PATCH net-next] tun: fix build warnings

From: Jason Wang <redacted>
Date: Mon,  4 Jul 2016 13:53:38 +0800

Stephen Rothwell reports a build warnings(powerpc ppc64_defconfig)

drivers/net/tun.c: In function 'tun_do_read.part.5':
/home/sfr/next/next/drivers/net/tun.c:1491:6: warning: 'err' may be
used uninitialized in this function [-Wmaybe-uninitialized]
   int err;

This is because tun_ring_recv() may return an uninitialized err, fix this.

Reported-by: Stephen Rothwell <redacted>
Signed-off-by: Jason Wang <redacted>

Applied, thanks Jason.