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scsi: ufs: introduce a new ufshcd_statea UFSHCD_STATE_EH_SCHEDULED 

Add a new ufshcd_state, indicats that an err handler may get to run
immediately. Use UFSHCD_STATE_ERROR here looks not literaly correct.

Signed-off-by: Zang Leigang <zangleigang@hisilicon.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Zang Leigang 2016-11-16 11:29:37 +08:00 committed by Martin K. Petersen
parent 6593ccd800
commit 141f816510
1 changed files with 3 additions and 1 deletions
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4
drivers/scsi/ufs/ufshcd.c
View File

@ -125,6 +125,7 @@ enum {
UFSHCD_STATE_RESET,
UFSHCD_STATE_ERROR,
UFSHCD_STATE_OPERATIONAL,
UFSHCD_STATE_EH_SCHEDULED,
};
/* UFSHCD error handling flags */
@ -1450,6 +1451,7 @@ static int ufshcd_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
switch (hba->ufshcd_state) {
case UFSHCD_STATE_OPERATIONAL:
break;
case UFSHCD_STATE_EH_SCHEDULED:
case UFSHCD_STATE_RESET:
err = SCSI_MLQUEUE_HOST_BUSY;
goto out_unlock;
@ -4212,7 +4214,7 @@ static void ufshcd_check_errors(struct ufs_hba *hba)
/* block commands from scsi mid-layer */
scsi_block_requests(hba->host);
hba->ufshcd_state = UFSHCD_STATE_ERROR;
hba->ufshcd_state = UFSHCD_STATE_EH_SCHEDULED;
schedule_work(&hba->eh_work);
}
}