When forcing the use of MSI (vs MSI-X) the driver is crashing in
pci_irq_get_affinity.
The driver was not using the new pci_alloc_irq_vectors interface
in the MSI path.
Fix by using pci_alloc_irq_vectors() with PCI_RQ_MSI in the MSI path.
Signed-off-by: Dick Kennedy <dick.kenn...@broadcom.com>
Signed-off-by: James Smart <jsmart2...@gmail.com>
---
drivers/scsi/lpfc/lpfc_init.c | 17 +++++++++--------
1 file changed, 9 insertions(+), 8 deletions(-)
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 1e43890f9ae1..7227bd46244d 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -11140,10 +11140,10 @@ lpfc_sli4_enable_msix(struct lpfc_hba *phba)
* @phba: pointer to lpfc hba data structure.
*
* This routine is invoked to enable the MSI interrupt mode to device with
- * SLI-4 interface spec. The kernel function pci_enable_msi() is called
- * to enable the MSI vector. The device driver is responsible for calling
- * the request_irq() to register MSI vector with a interrupt the handler,
- * which is done in this function.
+ * SLI-4 interface spec. The kernel function pci_alloc_irq_vectors() is
+ * called to enable the MSI vector. The device driver is responsible for
+ * calling the request_irq() to register MSI vector with a interrupt the
+ * handler, which is done in this function.
*
* Return codes
* 0 - successful
@@ -11154,20 +11154,21 @@ lpfc_sli4_enable_msi(struct lpfc_hba *phba)
{
int rc, index;
- rc = pci_enable_msi(phba->pcidev);
- if (!rc)
+ rc = pci_alloc_irq_vectors(phba->pcidev, 1, 1,
+ PCI_IRQ_MSI | PCI_IRQ_AFFINITY);
+ if (rc > 0)
lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
"0487 PCI enable MSI mode success.\n");
else {
lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
"0488 PCI enable MSI mode failed (%d)\n", rc);
- return rc;
+ return rc ? rc : -1;
}
rc = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
0, LPFC_DRIVER_NAME, phba);
if (rc) {
- pci_disable_msi(phba->pcidev);
+ pci_free_irq_vectors(phba->pcidev);
lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
"0490 MSI request_irq failed (%d)\n", rc);
return rc;
--
2.13.7
