linux/arch/ia64/pci
Bjorn Helgaas 5a1e0baa34 PCI/MSI: Don't set up INTx if MSI or MSI-X is enabled
If MSI or MSI-X is enabled, the device uses that.  It uses INTx only if
both MSI and MSI-X are disabled (see PCIe r4.0, sec 7.7.1.2), so if a
device already has MSI or MSI-X enabled, there's no need to set up its
legacy INTx interrupt.

bba6f6fc68 ("[PATCH] MSI-X: fix resume crash") changed the cris, frv,
x86, and ia64 arches to skip INTx setup when MSI is enabled.  The cris and
frv arches have since been removed.

16cf0ebc35 ("x86/PCI: Do not use interrupt links for devices using
MSI-X") extended that by changing x86 to also skip INTx setup when MSI-X is
enabled.

Change ia64 to skip INTx setup when either MSI or MSI-X is enabled by
applying the logic from 16cf0ebc35 to ia64 as well as x86.

Tested-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
2018-03-13 15:03:36 -05:00
..
fixup.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile PCI: fix pci_fixup_video as it blows up on sparc64 2006-10-27 11:20:33 -07:00
pci.c PCI/MSI: Don't set up INTx if MSI or MSI-X is enabled 2018-03-13 15:03:36 -05:00