diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2026-01-06 18:44:10 +0200 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2026-01-14 15:53:33 +0100 |
| commit | b43181b724e8b98f1c42d44db8f3c132a932773e (patch) | |
| tree | 3bc8eaaa68dbbbc01a4dc780346843fe7df3ea19 | |
| parent | d540d090be8fd2be2dc2b1e0b2818a4a48abcc3e (diff) | |
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: 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>
| -rw-r--r-- | drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c b/drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c index 8ade911e3835..0fd3587671e1 100644 --- a/drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c +++ b/drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c @@ -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) |