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| author | Jiang Liu <jiang.liu@linux.intel.com> | 2014-08-29 17:26:23 +0800 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2014-08-29 13:38:00 +0200 |
| commit | 9eabc99a635a77cbf0948ce17d3cbc2b51680d4a (patch) | |
| tree | 096bfd1ecd8e69bbdf877128295cb5e5abae5584 /drivers/acpi/pci_irq.c | |
| parent | f395dcae7a68497751869cf0031fd8ce5e115f0a (diff) | |
| download | lwn-9eabc99a635a77cbf0948ce17d3cbc2b51680d4a.tar.gz lwn-9eabc99a635a77cbf0948ce17d3cbc2b51680d4a.zip | |
x86, irq, PCI: Keep IRQ assignment for runtime power management
Now IOAPIC driver dynamically allocates IRQ numbers for IOAPIC pins.
We need to keep IRQ assignment for PCI devices during runtime power
management, otherwise it may cause failure of device wakeups.
Commit 3eec595235c17a7 "x86, irq, PCI: Keep IRQ assignment for PCI
devices during suspend/hibernation" has fixed the issue for suspend/
hibernation, we also need the same fix for runtime device sleep too.
Fix: https://bugzilla.kernel.org/show_bug.cgi?id=83271
Reported-and-Tested-by: EmanueL Czirai <amanual@openmailbox.org>
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: EmanueL Czirai <amanual@openmailbox.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Grant Likely <grant.likely@linaro.org>
Link: http://lkml.kernel.org/r/1409304383-18806-1-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/acpi/pci_irq.c')
| -rw-r--r-- | drivers/acpi/pci_irq.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c index c96887d5289e..6e6b80eb0bba 100644 --- a/drivers/acpi/pci_irq.c +++ b/drivers/acpi/pci_irq.c @@ -484,6 +484,10 @@ void acpi_pci_irq_disable(struct pci_dev *dev) /* Keep IOAPIC pin configuration when suspending */ if (dev->dev.power.is_prepared) return; +#ifdef CONFIG_PM_RUNTIME + if (dev->dev.power.runtime_status == RPM_SUSPENDING) + return; +#endif entry = acpi_pci_irq_lookup(dev, pin); if (!entry) |