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| author |   Tejun Heo <htejun@gmail.com> | 2006-05-15 20:58:05 +0900 |
|---|---|---|
| committer | Tejun Heo <htejun@gmail.com> | 2006-05-15 20:58:05 +0900 |
| commit | f686bcb8078ac7505ec88818886c2c72639f4fc5 (patch) | |
| tree | 7c563e0032b2d85b631b617b8bb2a7a648607468 /drivers/scsi/libata.h | |
| parent | [PATCH] libata-eh-fw: update ata_qc_from_tag() to enforce normal/EH qc ownership (diff) | |
| download | linux-dev-f686bcb8078ac7505ec88818886c2c72639f4fc5.tar.xz linux-dev-f686bcb8078ac7505ec88818886c2c72639f4fc5.zip | |
[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 <htejun@gmail.com>
Diffstat (limited to 'drivers/scsi/libata.h')
| -rw-r--r-- | drivers/scsi/libata.h | 2 |
1 files changed, 2 insertions, 0 deletions
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__ */ |