Currently auto-hibern8 is activated if host supports auto-hibern8 capability. However no error handlings are existed thus this feature is kind of risky.
If "Hibernate Enter" or "Hibernate Exit" fail happens during auto-hibern8 flow, the corresponding interrupt "UIC_HIBERNATE_ENTER" or "UIC_HIBERNATE_EXIT" shall be raised according to UFS specification. This patch adds auto-hibern8 error handlings: - Monitor "Hibernate Enter" and "Hibernate Exit" interrupts after auto-hibern8 feature is activated. - If fail happens, trigger error handlings just like "manual-hibernate" fail and use the same flow: Identify errors and schedule UFS error handler in ufshcd_check_errors(), and then do host reset and restore in UFS error handler. Stanley Chu (3): scsi: ufs: do not overwrite auto-hibern8 timer scsi: ufs: add error handling of auto-hibern8 scsi: ufs: use re-factored auto_hibern8 function drivers/scsi/ufs/ufshcd.c | 16 +++++++++++++++- drivers/scsi/ufs/ufshcd.h | 13 +++++++++++++ drivers/scsi/ufs/ufshci.h | 3 +++ 3 files changed, 31 insertions(+), 1 deletion(-) -- 2.18.0
