Commit b43181b7 authored by Adrian Hunter's avatar Adrian Hunter Committed by Alexandre Belloni
Browse files

i3c: mipi-i3c-hci-pci: Enable MSI support 



Enable MSI support by using pci_alloc_irq_vectors() to request all
supported IRQ types.  Do not call pci_free_irq_vectors() because for
resource-managed devices (those initialized with pcim_enable_device()),
IRQ vector allocation is automatically managed. See
pci_setup_msi_context() and pcim_setup_msi_release() for details.

Note: The current documentation for pci_alloc_irq_vectors() does not
mention this behavior.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Reviewed-by: default avatarFrank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260106164416.67074-6-adrian.hunter@intel.com


Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
parent d540d090

drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c

+6 −2
Original line number Diff line number Diff line
@@ -203,6 +203,10 @@ static int mipi_i3c_hci_pci_probe(struct pci_dev *pci, 


	pci_set_master(pci);



	ret = pci_alloc_irq_vectors(pci, 1, 1, PCI_IRQ_ALL_TYPES);

	if (ret < 0)

		return ret;



	memset(&res, 0, sizeof(res));



	res[0].flags = IORESOURCE_MEM;
@@ -210,8 +214,8 @@ static int mipi_i3c_hci_pci_probe(struct pci_dev *pci, 
	res[0].end = pci_resource_end(pci, 0);



	res[1].flags = IORESOURCE_IRQ;

	res[1].start = pci->irq;

	res[1].end = pci->irq;

	res[1].start = pci_irq_vector(hci->pci, 0);

	res[1].end = res[1].start;



	dev_id = ida_alloc(&mipi_i3c_hci_pci_ida, GFP_KERNEL);

	if (dev_id < 0)