From 8b9ec1da6a310b438516468c669a7e1be046b18c Mon Sep 17 00:00:00 2001 From: Rafael J. Wysocki Date: Fri, 10 Jan 2014 15:27:08 +0100 Subject: 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 Signed-off-by: Bjorn Helgaas --- drivers/platform/x86/eeepc-laptop.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/platform/x86/eeepc-laptop.c') 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); } -- cgit v1.2.3