!9045 ALSA: seq: Fix race of snd_seq_timer_open()

Merge Pull Request from: @ci-robot 
 
PR sync from: Zheng Zucheng <zhengzucheng@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/WTXW5IBUUXPQPVFWASTV6JN6IGJX4UIB/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9R4II 
 
Link:https://gitee.com/openeuler/kernel/pulls/9045

 

Reviewed-by: Liu YongQiang <liuyongqiang13@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>