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authorJames Smart <james.smart@emulex.com>2010-03-15 18:25:32 +0300
committerJames Bottomley <James.Bottomley@suse.de>2010-04-11 18:23:50 +0400
commite2af0d2ed86a2415b0562526601cf2d5cae5a96d (patch)
tree9b9ac26c14c82847f234c9e270362000630c8f33 /drivers/scsi
parent7a4702774381103e936cae09ec12301090c6c212 (diff)
downloadlinux-e2af0d2ed86a2415b0562526601cf2d5cae5a96d.tar.xz
[SCSI] lpfc 8.3.11: Fix AER uncorrectable non-fatal error handling
Only abort outstanding I/O to force the OS to retry failed I/Os for AER uncorrectable non-fatal errors instead of reseting the adapter. Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com> Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/lpfc/lpfc_init.c50
1 files changed, 27 insertions, 23 deletions
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index feba3be90cb2..56421c714bf8 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -7764,21 +7764,23 @@ lpfc_pci_resume_one_s3(struct pci_dev *pdev)
* @phba: pointer to lpfc hba data structure.
*
* This routine is called to prepare the SLI3 device for PCI slot recover. It
- * aborts and stops all the on-going I/Os on the pci device.
+ * aborts all the outstanding SCSI I/Os to the pci device.
**/
static void
lpfc_sli_prep_dev_for_recover(struct lpfc_hba *phba)
{
+ struct lpfc_sli *psli = &phba->sli;
+ struct lpfc_sli_ring *pring;
+
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2723 PCI channel I/O abort preparing for recovery\n");
- /* Prepare for bringing HBA offline */
- lpfc_offline_prep(phba);
- /* Clear sli active flag to prevent sysfs access to HBA */
- spin_lock_irq(&phba->hbalock);
- phba->sli.sli_flag &= ~LPFC_SLI_ACTIVE;
- spin_unlock_irq(&phba->hbalock);
- /* Stop and flush all I/Os and bring HBA offline */
- lpfc_offline(phba);
+
+ /*
+ * There may be errored I/Os through HBA, abort all I/Os on txcmplq
+ * and let the SCSI mid-layer to retry them to recover.
+ */
+ pring = &psli->ring[psli->fcp_ring];
+ lpfc_sli_abort_iocb_ring(phba, pring);
}
/**
@@ -7792,21 +7794,20 @@ lpfc_sli_prep_dev_for_recover(struct lpfc_hba *phba)
static void
lpfc_sli_prep_dev_for_reset(struct lpfc_hba *phba)
{
- struct lpfc_sli *psli = &phba->sli;
- struct lpfc_sli_ring *pring;
-
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2710 PCI channel disable preparing for reset\n");
+
+ /* Block all SCSI devices' I/Os on the host */
+ lpfc_scsi_dev_block(phba);
+
+ /* stop all timers */
+ lpfc_stop_hba_timers(phba);
+
/* Disable interrupt and pci device */
lpfc_sli_disable_intr(phba);
pci_disable_device(phba->pcidev);
- /*
- * There may be I/Os dropped by the firmware.
- * Error iocb (I/O) on txcmplq and let the SCSI layer
- * retry it after re-establishing link.
- */
- pring = &psli->ring[psli->fcp_ring];
- lpfc_sli_abort_iocb_ring(phba, pring);
+ /* Flush all driver's outstanding SCSI I/Os as we are to reset */
+ lpfc_sli_flush_fcp_rings(phba);
}
/**
@@ -7822,6 +7823,12 @@ lpfc_prep_dev_for_perm_failure(struct lpfc_hba *phba)
{
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2711 PCI channel permanent disable for failure\n");
+ /* Block all SCSI devices' I/Os on the host */
+ lpfc_scsi_dev_block(phba);
+
+ /* stop all timers */
+ lpfc_stop_hba_timers(phba);
+
/* Clean up all driver's outstanding SCSI I/Os */
lpfc_sli_flush_fcp_rings(phba);
}
@@ -7850,9 +7857,6 @@ lpfc_io_error_detected_s3(struct pci_dev *pdev, pci_channel_state_t state)
struct Scsi_Host *shost = pci_get_drvdata(pdev);
struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
- /* Block all SCSI devices' I/Os on the host */
- lpfc_scsi_dev_block(phba);
-
switch (state) {
case pci_channel_io_normal:
/* Non-fatal error, prepare for recovery */
@@ -7959,7 +7963,7 @@ lpfc_io_resume_s3(struct pci_dev *pdev)
struct Scsi_Host *shost = pci_get_drvdata(pdev);
struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
- /* Bring the device online */
+ /* Bring device online, it will be no-op for non-fatal error resume */
lpfc_online(phba);
/* Clean up Advanced Error Reporting (AER) if needed */