From: Adrian Hunter Date: Fri, 23 Jan 2026 06:33:25 +0000 (+0200) Subject: i3c: mipi-i3c-hci-pci: Add System Suspend support X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4280197d154cae1d1d5acb54484da26da04eac32;p=thirdparty%2Flinux.git i3c: mipi-i3c-hci-pci: Add System Suspend support Assign the driver PM operations pointer, which is necessary for the PCI subsystem to put the device into a low power state. Refer to pci_pm_suspend_noirq() which bails out if the pointer is NULL, before it has the opportunity to call pci_prepare_to_sleep(). No other actions are necessary as the mipi-i3c-hci driver takes care of controller state. Signed-off-by: Adrian Hunter Reviewed-by: Frank Li Link: https://patch.msgid.link/20260123063325.8210-4-adrian.hunter@intel.com Signed-off-by: Alexandre Belloni --- 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 1b38771667e5a..0f05a15c14c7f 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 @@ -320,6 +320,10 @@ static void mipi_i3c_hci_pci_remove(struct pci_dev *pci) mfd_remove_devices(&pci->dev); } +/* PM ops must exist for PCI to put a device to a low power state */ +static const struct dev_pm_ops mipi_i3c_hci_pci_pm_ops = { +}; + static const struct pci_device_id mipi_i3c_hci_pci_devices[] = { /* Wildcat Lake-U */ { PCI_VDEVICE(INTEL, 0x4d7c), (kernel_ulong_t)&intel_mi_1_info}, @@ -342,6 +346,9 @@ static struct pci_driver mipi_i3c_hci_pci_driver = { .id_table = mipi_i3c_hci_pci_devices, .probe = mipi_i3c_hci_pci_probe, .remove = mipi_i3c_hci_pci_remove, + .driver = { + .pm = pm_ptr(&mipi_i3c_hci_pci_pm_ops) + }, }; module_pci_driver(mipi_i3c_hci_pci_driver);