Nam Cao 5149bbb56b PCI: vmd: Remove MSI-X check on child devices ... d7d8ab87e3 ("PCI: vmd: Switch to msi_create_parent_irq_domain()") added a WARN_ON sanity check that child devices support MSI-X, because VMD document says [1]: Intel VMD only supports MSIx Interrupts from child devices and therefore the BIOS must enable PCIe Hot Plug and MSIx interrups [sic]. However, the VMD device can't even tell the difference between a child device using MSI and one using MSI-X. Per 185a383ada ("x86/PCI: Add driver for Intel Volume Management Device (VMD)"), VMD does not support INTx interrupts, but does support child devices using either MSI or MSI-X. Remove the sanity check to avoid the WARN_ON and allow child devices to use MSI, reported by Ammar. Fixes: d7d8ab87e3 ("PCI: vmd: Switch to msi_create_parent_irq_domain()") Link: https://cdrdv2-public.intel.com/776857/VMD_White_Paper.pdf [1] Reported-by: Ammar Faizi <ammarfaizi2@gnuweeb.org> Closes: https://lore.kernel.org/linux-pci/aJXYhfc%2F6DfcqfqF@linux.gnuweeb.org/ Signed-off-by: Nam Cao <namcao@linutronix.de> [bhelgaas: commit log] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Tested-by: Ammar Faizi <ammarfaizi2@gnuweeb.org> Link: https://patch.msgid.link/20250811053935.4049211-1-namcao@linutronix.de		2025-08-12 13:45:01 -05:00
..
controller	PCI: vmd: Remove MSI-X check on child devices	2025-08-12 13:45:01 -05:00
endpoint	Merge branch 'pci/endpoint/epf-vntb'	2025-07-31 16:11:46 -05:00
hotplug	powerpc fixes for 6.17 #2	2025-08-03 19:15:04 -07:00
msi	pci-v6.17-changes	2025-08-01 13:59:07 -07:00
pcie	pci-v6.17-changes	2025-08-01 13:59:07 -07:00
pwrctrl
switch
access.c
ats.c
bus.c
devres.c
doe.c
ecam.c
host-bridge.c
iomap.c
iov.c
irq.c
Kconfig
Makefile
mmap.c
npem.c
of.c
of_property.c
p2pdma.c
pci-acpi.c	pci-v6.17-changes	2025-08-01 13:59:07 -07:00
pci-bridge-emul.c
pci-bridge-emul.h
pci-driver.c	pci-v6.17-changes	2025-08-01 13:59:07 -07:00
pci-label.c
pci-mid.c
pci-pf-stub.c
pci-stub.c
pci-sysfs.c
pci.c	pci-v6.17-changes	2025-08-01 13:59:07 -07:00
pci.h	Merge branch 'pci/controller/linkup-fix'	2025-07-31 16:11:47 -05:00
probe.c	pci-v6.17-changes	2025-08-01 13:59:07 -07:00
proc.c
quirks.c	pci-v6.17-changes	2025-08-01 13:59:07 -07:00
remove.c
rom.c
search.c
setup-bus.c
setup-res.c
slot.c
syscall.c
tph.c	PCI/TPH: Expose pcie_tph_get_st_table_size()	2025-07-23 01:27:32 -04:00
vc.c
vgaarb.c
vpd.c
xen-pcifront.c