From: Michael Hernandez <michael.hernandez@xxxxxxxxxx>
For target mode, we need to increase minimum vectors value by one to
account for ATIO queue.
Following stack trace will be seen
Call Trace:
qla24xx_config_rings+0x15a/0x230 [qla2xxx]
qla2x00_init_rings+0x1a1/0x3a0 [qla2xxx]
qla2x00_restart_isp+0x5c/0x120 [qla2xxx]
qla2x00_abort_isp+0x138/0x430 [qla2xxx]
? __schedule+0x260/0x580
qla2x00_do_dpc+0x3bc/0x920 [qla2xxx]
? qla2x00_relogin+0x290/0x290 [qla2xxx]
? schedule+0x3a/0xa0
? qla2x00_relogin+0x290/0x290 [qla2xxx]
kthread+0x103/0x140
? __kthread_init_worker+0x40/0x40
ret_from_fork+0x29/0x40
RIP: qlt_24xx_config_rings+0x6c/0x90
Fixes: 17e5fc5 ("scsi: qla2xxx: fix MSI-X vector affinity")
Signed-off-by: Michael Hernandez <michael.hernandez@xxxxxxxxxx>
Signed-off-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
---
drivers/scsi/qla2xxx/qla_isr.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index 6e0a0f1..6b324ac 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -3013,14 +3013,17 @@ struct qla_init_msix_entry {
int i, ret;
struct qla_msix_entry *qentry;
scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
+ int min_vecs = QLA_BASE_VECTORS;
struct irq_affinity desc = {
.pre_vectors = QLA_BASE_VECTORS,
};
- if (QLA_TGT_MODE_ENABLED() && IS_ATIO_MSIX_CAPABLE(ha))
+ if (QLA_TGT_MODE_ENABLED() && IS_ATIO_MSIX_CAPABLE(ha)) {
desc.pre_vectors++;
+ min_vecs++;
+ }
- ret = pci_alloc_irq_vectors_affinity(ha->pdev, QLA_BASE_VECTORS,
+ ret = pci_alloc_irq_vectors_affinity(ha->pdev, min_vecs,
ha->msix_count, PCI_IRQ_MSIX | PCI_IRQ_AFFINITY,
&desc);
--
1.8.3.1
