tun: allow positive return values on dev_get_valid_name() call

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If the name argument of dev_get_valid_name() contains "%d", it will try
to assign it a unit number in __dev__alloc_name() and return either the
unit number (>= 0) or an error code (< 0).
Considering positive values as error values prevent tun device creations
relying this mechanism, therefor we should only consider negative values
as errors here.

Signed-off-by: Julien Gomes <julien@arista.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Julien Gomes 2017-10-25 11:50:50 -07:00 • committed by David S. Miller

parent d309ae5c6a

commit 5c25f65fd1

1 changed files with 1 additions and 1 deletions

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drivers/net/tun.c

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