tree 683e8a787d1a45bb593c2f45a1042bd60428a79f
parent 69861e0a52f8733355ce246f0db15e1b240ad667
author Wei Yongjun <weiyongjun1@huawei.com> 1494944567 +0000
committer Stefano Stabellini <sstabellini@kernel.org> 1495132952 -0700

xen/9pfs: fix return value check in xen_9pfs_front_probe()

In case of error, the function xenbus_read() returns ERR_PTR() and never
returns NULL. The NULL test in the return value check should be replaced
with IS_ERR().

Fixes: 71ebd71921e4 ("xen/9pfs: connect to the backend")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>