diff options
| author | Rafael J. Wysocki | 2014-01-10 15:27:08 +0100 |
|---|---|---|
| committer | Bjorn Helgaas | 2014-01-14 20:14:25 +0100 |
| commit | 8b9ec1da6a310b438516468c669a7e1be046b18c (patch) | |
| tree | e944d9d21bba1f2f90ff48f0bd9b467b9f3ee270 /drivers/platform/x86/eeepc-laptop.c | |
| parent | PCI: hotplug: Use global PCI rescan-remove locking (diff) | |
| download | kernel-qcow2-linux-8b9ec1da6a310b438516468c669a7e1be046b18c.tar.gz kernel-qcow2-linux-8b9ec1da6a310b438516468c669a7e1be046b18c.tar.xz kernel-qcow2-linux-8b9ec1da6a310b438516468c669a7e1be046b18c.zip | |
platform / x86: Use global PCI rescan-remove locking
Multiple race conditions are possible between the rfkill hotplug in the
asus-wmi and eeepc-laptop drivers and the generic PCI bus rescan and device
removal that can be triggered via sysfs.
To avoid those race conditions make asus-wmi and eeepc-laptop use global
PCI rescan-remove locking around the rfkill hotplug.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/platform/x86/eeepc-laptop.c')
| -rw-r--r-- | drivers/platform/x86/eeepc-laptop.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c index aefcc32e5634..538521b00948 100644 --- a/drivers/platform/x86/eeepc-laptop.c +++ b/drivers/platform/x86/eeepc-laptop.c @@ -592,6 +592,7 @@ static void eeepc_rfkill_hotplug(struct eeepc_laptop *eeepc, acpi_handle handle) rfkill_set_sw_state(eeepc->wlan_rfkill, blocked); mutex_lock(&eeepc->hotplug_lock); + pci_lock_rescan_remove(); if (eeepc->hotplug_slot) { port = acpi_get_pci_dev(handle); @@ -649,6 +650,7 @@ out_put_dev: } out_unlock: + pci_unlock_rescan_remove(); mutex_unlock(&eeepc->hotplug_lock); } |