From f686bcb8078ac7505ec88818886c2c72639f4fc5 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 15 May 2006 20:58:05 +0900 Subject: [PATCH] libata-eh-fw: implement new EH scheduling via error completion There are several ways a qc can get schedule for EH in new EH. This patch implements one of them - completing a qc with ATA_QCFLAG_FAILED set or with non-zero qc->err_mask. ALL such qc's are examined by EH. New EH schedules a qc for EH from completion iff ->error_handler is implemented, qc is marked as failed or qc->err_mask is non-zero and the command is not an internal command (internal cmd is handled via ->post_internal_cmd). The EH scheduling itself is performed by asking SCSI midlayer to schedule EH for the specified scmd. For drivers implementing old-EH, nothing changes. As this change makes ata_qc_complete() rather large, it's not inlined anymore and __ata_qc_complete() is exported to other parts of libata for later use. Signed-off-by: Tejun Heo --- drivers/scsi/libata.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/scsi/libata.h') diff --git a/drivers/scsi/libata.h b/drivers/scsi/libata.h index c9ff83bbcfae..52622b7f8a9e 100644 --- a/drivers/scsi/libata.h +++ b/drivers/scsi/libata.h @@ -57,6 +57,7 @@ extern int ata_do_reset(struct ata_port *ap, ata_reset_fn_t reset, unsigned int *classes); extern void ata_qc_free(struct ata_queued_cmd *qc); extern void ata_qc_issue(struct ata_queued_cmd *qc); +extern void __ata_qc_complete(struct ata_queued_cmd *qc); extern int ata_check_atapi_dma(struct ata_queued_cmd *qc); extern void ata_dev_select(struct ata_port *ap, unsigned int device, unsigned int wait, unsigned int can_sleep); @@ -101,5 +102,6 @@ extern void ata_scsi_rbuf_fill(struct ata_scsi_args *args, /* libata-eh.c */ extern enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd); extern void ata_scsi_error(struct Scsi_Host *host); +extern void ata_qc_schedule_eh(struct ata_queued_cmd *qc); #endif /* __LIBATA_H__ */ -- cgit v1.2.3-55-g7522