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| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2019-10-29 20:00:21 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2019-11-12 16:27:33 -0600 |
| commit | 75fcc0ce72e5cea2e357cdde858216c5bad40442 (patch) | |
| tree | 59446dcdf235db6a5459eb66540f8f95a0bad13e /.get_maintainer.ignore | |
| parent | b94ec12dfaee41bdd6a8b6d75e5715d9ba2c92cc (diff) | |
| download | lwn-75fcc0ce72e5cea2e357cdde858216c5bad40442.tar.gz lwn-75fcc0ce72e5cea2e357cdde858216c5bad40442.zip | |
PCI: pciehp: Do not disable interrupt twice on suspend
We try to keep PCIe hotplug ports runtime suspended when entering system
suspend. Because the PCIe portdrv sets the DPM_FLAG_NEVER_SKIP flag, the PM
core always calls system suspend/resume hooks even if the device is left
runtime suspended. Since PCIe hotplug driver re-used the same function for
both runtime suspend and system suspend, it ended up disabling hotplug
interrupt twice and the second time following was printed:
pciehp 0000:03:01.0:pcie204: pcie_do_write_cmd: no response from device
Prevent this from happening by checking whether the device is already
runtime suspended when the system suspend hook is called.
Fixes: 9c62f0bfb832 ("PCI: pciehp: Implement runtime PM callbacks")
Link: https://lore.kernel.org/r/20191029170022.57528-1-mika.westerberg@linux.intel.com
Reported-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Tested-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to '.get_maintainer.ignore')
0 files changed, 0 insertions, 0 deletions