Commit b85a2d30 authored by Srinivas Pandruvada's avatar Srinivas Pandruvada Committed by Rafael J. Wysocki
Browse files

thermal: intel: int340x: Allow limited thermal MSI support 



On some Lunar Lake pre-production systems, not all the MSI thermal
vectors are valid. In that case instead of failing module load, continue
with partial thermal interrupt support.

pci_alloc_irq_vectors() can return less than expected maximum vectors.
In that case call devm_request_threaded_irq() only for current maximum
vectors.

Fixes: 7a9a8c5f ("thermal: intel: int340x: Support MSI interrupt for Lunar Lake")
Reported-by: default avatarYijun Shen <Yijun.Shen@dell.com>
Tested-by: default avatarYijun Shen <Yijun.Shen@dell.com>
Signed-off-by: default avatarSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: default avatarZhang Rui <rui.zhang@intel.com>
Link: https://patch.msgid.link/20240723140228.865919-3-srinivas.pandruvada@linux.intel.com


Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent b630a041

drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c

+5 −5
Original line number Diff line number Diff line
@@ -292,18 +292,18 @@ static void proc_thermal_free_msi(struct pci_dev *pdev, struct proc_thermal_pci 


static int proc_thermal_setup_msi(struct pci_dev *pdev, struct proc_thermal_pci *pci_info)

{

	int ret, i, irq;

	int ret, i, irq, count;



	ret = pci_alloc_irq_vectors(pdev, 1, MSI_THERMAL_MAX, PCI_IRQ_MSI | PCI_IRQ_MSIX);

	if (ret < 0) {

	count = pci_alloc_irq_vectors(pdev, 1, MSI_THERMAL_MAX, PCI_IRQ_MSI | PCI_IRQ_MSIX);

	if (count < 0) {

		dev_err(&pdev->dev, "Failed to allocate vectors!\n");

		return ret;

		return count;

	}



	dev_info(&pdev->dev, "msi enabled:%d msix enabled:%d\n", pdev->msi_enabled,

		 pdev->msix_enabled);



	for (i = 0; i < MSI_THERMAL_MAX; i++) {

	for (i = 0; i < count; i++) {

		irq =  pci_irq_vector(pdev, i);



		ret = devm_request_threaded_irq(&pdev->dev, irq, proc_thermal_irq_handler,