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![]() Apparently, some machines may have problems with PCI run-time power management if MSIs are used for the native PCIe PME signaling. In particular, on the MSI Wind U-100 PCIe PME interrupts are not generated by a PCIe root port after a resume from suspend to RAM, if the system wake-up was triggered by a PME from the device attached to this port. [It doesn't help to free the interrupt on suspend and request it back on resume, even if that is done along with disabling the MSI and re-enabling it, respectively.] However, if INTx interrupts are used for this purpose on the same machine, everything works just fine. For this reason, add a kernel command line switch allowing one to request that MSIs be not used for the native PCIe PME signaling, introduce a DMI table allowing us to blacklist machines that need this switch to be set by default and put the MSI Wind U-100 into this table. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> |
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.. | ||
hotplug | ||
pcie | ||
.gitignore | ||
access.c | ||
bus.c | ||
dmar.c | ||
hotplug-pci.c | ||
hotplug.c | ||
htirq.c | ||
intel-iommu.c | ||
intr_remapping.c | ||
intr_remapping.h | ||
ioapic.c | ||
iov.c | ||
iova.c | ||
irq.c | ||
Kconfig | ||
Makefile | ||
msi.c | ||
msi.h | ||
pci-acpi.c | ||
pci-driver.c | ||
pci-stub.c | ||
pci-sysfs.c | ||
pci.c | ||
pci.h | ||
probe.c | ||
proc.c | ||
quirks.c | ||
remove.c | ||
rom.c | ||
search.c | ||
setup-bus.c | ||
setup-irq.c | ||
setup-res.c | ||
slot.c | ||
syscall.c |