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

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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: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260106164416.67074-6-adrian.hunter@intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Adrian Hunter 2026-01-06 18:44:10 +02:00 committed by Alexandre Belloni
parent d540d090be
commit b43181b724
1 changed files with 6 additions and 2 deletions
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8
drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c
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@ -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)