diff options
Diffstat (limited to 'drivers/hwtracing')
| -rw-r--r-- | drivers/hwtracing/intel_th/core.c | 7 | ||||
| -rw-r--r-- | drivers/hwtracing/intel_th/intel_th.h | 2 | ||||
| -rw-r--r-- | drivers/hwtracing/intel_th/pci.c | 1 |
3 files changed, 9 insertions, 1 deletions
diff --git a/drivers/hwtracing/intel_th/core.c b/drivers/hwtracing/intel_th/core.c index 750aa9d6f849..390031df3edf 100644 --- a/drivers/hwtracing/intel_th/core.c +++ b/drivers/hwtracing/intel_th/core.c @@ -639,7 +639,12 @@ intel_th_subdevice_alloc(struct intel_th *th, dev_dbg(th->dev, "%s:%d @ %pR\n", subdev->name, r, &res[r]); } else if (res[r].flags & IORESOURCE_IRQ) { - res[r].start = th->irq; + /* + * Only pass on the IRQ if we have useful interrupts: + * the ones that can be configured via MINTCTL. + */ + if (INTEL_TH_CAP(th, has_mintctl) && th->irq != -1) + res[r].start = th->irq; } } diff --git a/drivers/hwtracing/intel_th/intel_th.h b/drivers/hwtracing/intel_th/intel_th.h index 59038215489a..8b986ba160e4 100644 --- a/drivers/hwtracing/intel_th/intel_th.h +++ b/drivers/hwtracing/intel_th/intel_th.h @@ -44,10 +44,12 @@ struct intel_th_output { /** * struct intel_th_drvdata - describes hardware capabilities and quirks * @tscu_enable: device needs SW to enable time stamping unit + * @has_mintctl: device has interrupt control (MINTCTL) register * @host_mode_only: device can only operate in 'host debugger' mode */ struct intel_th_drvdata { unsigned int tscu_enable : 1, + has_mintctl : 1, host_mode_only : 1; }; diff --git a/drivers/hwtracing/intel_th/pci.c b/drivers/hwtracing/intel_th/pci.c index f5643444481b..5808dd4c104c 100644 --- a/drivers/hwtracing/intel_th/pci.c +++ b/drivers/hwtracing/intel_th/pci.c @@ -122,6 +122,7 @@ static void intel_th_pci_remove(struct pci_dev *pdev) static const struct intel_th_drvdata intel_th_2x = { .tscu_enable = 1, + .has_mintctl = 1, }; static const struct pci_device_id intel_th_pci_id_table[] = { |