[PATCH net-next 2/2] net: tap: fix POLLOUT condition in tap_poll()

[yuan linyu]

From: yuan linyu <linyu.y...@alcatel-sbell.com.cn>

from logical view, if sock_writeable(&q->sk) return false,
original second condition will false too,
change it and make second condition can return true.

Signed-off-by: yuan linyu <linyu.y...@alcatel-sbell.com.cn>
---
 drivers/net/tap.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/tap.c b/drivers/net/tap.c
index 78900a0..b809405 100644
--- a/drivers/net/tap.c
+++ b/drivers/net/tap.c
@@ -583,8 +583,7 @@ static unsigned int tap_poll(struct file *file, poll_table 
*wait)
                mask |= POLLIN | POLLRDNORM;
 
        if (sock_writeable(&q->sk) ||
-           (!test_and_set_bit(SOCKWQ_ASYNC_NOSPACE, &q->sock.flags) &&
-            sock_writeable(&q->sk)))
+           !test_and_set_bit(SOCKWQ_ASYNC_NOSPACE, &q->sock.flags))
                mask |= POLLOUT | POLLWRNORM;
 
 out:
-- 
2.7.4