diff options
| author | Rajat Jain <rajatxjain@gmail.com> | 2014-02-04 18:31:11 -0800 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2014-02-11 16:13:16 -0700 |
| commit | 50b52fdee050745935d92e7026373edea2647e60 (patch) | |
| tree | 0739f5a0135b070c7626542ffd593074341d950b /drivers/pci/hotplug/pciehp_hpc.c | |
| parent | c4f2f5e4981073a5aa0739f93b6733060cd37648 (diff) | |
| download | blackbird-op-linux-50b52fdee050745935d92e7026373edea2647e60.tar.gz blackbird-op-linux-50b52fdee050745935d92e7026373edea2647e60.zip | |
PCI: pciehp: Add hotplug_lock to serialize hotplug events
Today it is there is no protection around pciehp_enable_slot() and
pciehp_disable_slot() to ensure that they complete before another
hot-plug operation can be done on that particular slot.
This patch introduces the slot->hotplug_lock to ensure that any hotplug
operations (add / remove) complete before another hotplug event can begin
processing on that particular slot.
Signed-off-by: Rajat Jain <rajatxjain@gmail.com>
Signed-off-by: Rajat Jain <rajatjain@juniper.net>
Signed-off-by: Guenter Roeck <groeck@juniper.net>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/hotplug/pciehp_hpc.c')
| -rw-r--r-- | drivers/pci/hotplug/pciehp_hpc.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c index 6433e73aa2df..da4b0204b4f7 100644 --- a/drivers/pci/hotplug/pciehp_hpc.c +++ b/drivers/pci/hotplug/pciehp_hpc.c @@ -686,6 +686,7 @@ static int pcie_init_slot(struct controller *ctrl) slot->ctrl = ctrl; mutex_init(&slot->lock); + mutex_init(&slot->hotplug_lock); INIT_DELAYED_WORK(&slot->work, pciehp_queue_pushbutton_work); ctrl->slot = slot; return 0; |
