https://github.com/torvalds/linux
Commit 448bd85 (PCI/PM: add PCIe runtime D3cold support) added a piece of code to pci_acpi_wake_dev() causing that function to behave in a special way for devices in D3cold (so that their configuration registers are not accessed before those devices are resumed). However, it didn't take the clearing of the pme_poll flag into account. That has to be done for all devices, even if they are in D3cold, or pci_pme_list_scan() will not know that wakeup has been signaled for the device and will poll its PME Status bit unnecessarily. Fix the problem by moving the clearing of the pme_poll flag in pci_acpi_wake_dev() before the code introduced by commit 448bd85. Reported-and-tested-by: David E. Box <david.e.box@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Cc: 3.6+ <stable@vger.kernel.org> # 3.6+
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PCI / ACPI / PM: Clear pme_poll for devices in D3cold on wakeup
File | Mode | Size |
---|---|---|
Documentation | ||
arch | ||
block | ||
crypto | ||
drivers | ||
firmware | ||
fs | ||
include | ||
init | ||
ipc | ||
kernel | ||
lib | ||
mm | ||
net | ||
samples | ||
scripts | ||
security | ||
sound | ||
tools | ||
usr | ||
virt | ||
.gitignore | -rw-r--r-- | 1.1 KB |
.mailmap | -rw-r--r-- | 4.4 KB |
COPYING | -rw-r--r-- | 18.3 KB |
CREDITS | -rw-r--r-- | 93.1 KB |
Kbuild | -rw-r--r-- | 2.5 KB |
Kconfig | -rw-r--r-- | 252 bytes |
MAINTAINERS | -rw-r--r-- | 256.8 KB |
Makefile | -rw-r--r-- | 47.4 KB |
README | -rw-r--r-- | 18.3 KB |
REPORTING-BUGS | -rw-r--r-- | 7.3 KB |
Computing file changes ...