diff options
| author | James Smart <James.Smart@Emulex.Com> | 2006-12-02 13:34:56 -0500 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-12-03 09:31:04 -0600 |
| commit | 4ff43246e45943200ae3233732adf8708c2faef6 (patch) | |
| tree | 28204d5a11c4ca0de54c36a9e0bca9cfd3317f1c /drivers/scsi/lpfc/lpfc_init.c | |
| parent | c7743956f8cb7b496c05d8444050eba908662a14 (diff) | |
[SCSI] lpfc 8.1.11 : Add MSI (Message Signalled Interrupts) support
Add MSI (Message Signalled Interrupts) support
Actual use must be enabled via the new module parameter "lpfc_use_msi"
Defaults to no use
Many thanks to Frederic Temporelli who implemented the initial patch.
Signed-off-by: Frederic Temporelli <frederic.temporelli@ext.bull.net>
Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_init.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_init.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index 6b0718573ac..71ee0cd3221 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -1653,6 +1653,14 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid) if (error) goto out_remove_host; + if (phba->cfg_use_msi) { + error = pci_enable_msi(phba->pcidev); + if (error) + lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "%d:0452 " + "Enable MSI failed, continuing with " + "IRQ\n", phba->brd_no); + } + error = request_irq(phba->pcidev->irq, lpfc_intr_handler, IRQF_SHARED, LPFC_DRIVER_NAME, phba); if (error) { @@ -1732,6 +1740,7 @@ out_free_irq: lpfc_stop_timer(phba); phba->work_hba_events = 0; free_irq(phba->pcidev->irq, phba); + pci_disable_msi(phba->pcidev); out_free_sysfs_attr: lpfc_free_sysfs_attr(phba); out_remove_host: @@ -1798,6 +1807,7 @@ lpfc_pci_remove_one(struct pci_dev *pdev) /* Release the irq reservation */ free_irq(phba->pcidev->irq, phba); + pci_disable_msi(phba->pcidev); lpfc_cleanup(phba, 0); lpfc_stop_timer(phba); |