diff options
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_os.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_os.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index 3a57f07d73f5..16a44c0917e1 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -17,6 +17,7 @@ #include <linux/crash_dump.h> #include <linux/trace_events.h> #include <linux/trace.h> +#include <linux/irq.h> #include <scsi/scsi_tcq.h> #include <scsi/scsicam.h> @@ -7776,6 +7777,31 @@ static void qla_pci_error_cleanup(scsi_qla_host_t *vha) } +/** + * qla2xxx_set_affinity_nobalance + * @pdev: pci_dev struct for a qla2xxx device + * @flag: bool + * true: enable "IRQ_NO_BALANCING" bit for msix interrupt + * false: disable "IRQ_NO_BALANCING" bit for msix interrupt + * Description: This function will be called to disable/enable + * "IRQ_NO_BALANCING" to avoid irqbalance daemon + * kicking in during adapter reset. + **/ + +static void qla2xxx_set_affinity_nobalance(struct pci_dev *pdev, bool flag) +{ + int irq, i; + + for (i = 0; i < QLA_BASE_VECTORS; i++) { + irq = pci_irq_vector(pdev, i); + + if (flag) + irq_set_status_flags(irq, IRQ_NO_BALANCING); + else + irq_clear_status_flags(irq, IRQ_NO_BALANCING); + } +} + static pci_ers_result_t qla2xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state) { @@ -7794,6 +7820,8 @@ qla2xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state) goto out; } + qla2xxx_set_affinity_nobalance(pdev, false); + switch (state) { case pci_channel_io_normal: qla_pci_set_eeh_busy(vha); @@ -7930,6 +7958,8 @@ exit_slot_reset: ql_dbg(ql_dbg_aer, base_vha, 0x900e, "Slot Reset returning %x.\n", ret); + qla2xxx_set_affinity_nobalance(pdev, true); + return ret; } |