On 6/9/21 9:43 PM, Can Guo wrote:

UFS error handling now is doing more than just re-probing, but also sending
scsi cmds, e.g., for clearing UACs, and recovering runtime PM error, which
may change runtime status of scsi devices. To protect system suspend/resume
from being disturbed by error handling, move the host_sem from wl pm ops
to ufshcd_suspend_prepare() and ufshcd_resume_complete().

If lock_system_sleep() and unlock_system_sleep() would be used in the
error handler, would that allow to remove host_sem?

Thanks,

Bart.