!618 Bugfixes related to SAS error handling, DIF, and low power consumption

Merge Pull Request from: @xia-bing1 
 
Resolve the following issues:
1.SATA devices on an expander may be removed and not be found again when I_T nexus reset and revalidation are processed simultaneously.
2.Currently the driver sets the port invalid if one phy in the port is not enabled, which may cause issues in expander situation. In directly attached situation, if phy up doesn't occur in time when refreshing port id, the port is incorrectly set to invalid which will also cause disk lost.
3.When the current status of the host controller is suspended, enabling a local PHY just after disabling all local PHYs in expander envirnment, a hung as follows occurs.
4.incorrect port id may be configured in hisi_sas_refresh_port_id().As a result, all the internal IOs fail and disk lost,
5.After a HUAWEI disk that supports DIF3 is converted to a common SAS disk in DIF format, an error message is displayed when the FIO command is executed. 
 
Link:https://gitee.com/openeuler/kernel/pulls/618

 

Reviewed-by: Yihang Li <liyihang9@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>