diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c index 222ffb8..1790103 100644 --- a/drivers/platform/x86/eeepc-laptop.c +++ b/drivers/platform/x86/eeepc-laptop.c @@ -143,7 +143,7 @@ struct eeepc_hotk { struct rfkill *bluetooth_rfkill; struct rfkill *wwan3g_rfkill; struct hotplug_slot *hotplug_slot; - struct work_struct hotplug_work; + struct mutex hotplug_lock; }; /* The actual device the driver binds to */ @@ -661,24 +661,31 @@ static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot, return 0; } -static void eeepc_hotplug_work(struct work_struct *work) +static void eeepc_rfkill_hotplug(void) { struct pci_dev *dev; - struct pci_bus *bus = pci_find_bus(0, 1); - bool blocked; + struct pci_bus *bus; + bool blocked = eeepc_wlan_rfkill_blocked(); + + rfkill_set_sw_state(ehotk->wlan_rfkill, blocked); + + mutex_lock(&ehotk->hotplug_lock); + if (ehotk->hotplug_slot == NULL) + goto out_unlock; + + bus = pci_find_bus(0, 1); if (!bus) { pr_warning("Unable to find PCI bus 1?\n"); - return; + goto out_unlock; } - blocked = eeepc_wlan_rfkill_blocked(); if (!blocked) { dev = pci_get_slot(bus, 0); if (dev) { /* Device already present */ pci_dev_put(dev); - return; + goto out_unlock; } dev = pci_scan_single_device(bus, 0); if (dev) { @@ -694,7 +701,8 @@ static void eeepc_hotplug_work(struct work_struct *work) } } - rfkill_set_sw_state(ehotk->wlan_rfkill, blocked); +out_unlock: + mutex_unlock(&ehotk->hotplug_lock); } static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data) @@ -702,7 +710,7 @@ static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data) if (event != ACPI_NOTIFY_BUS_CHECK) return; - schedule_work(&ehotk->hotplug_work); + eeepc_rfkill_hotplug(); } static void eeepc_hotk_notify(struct acpi_device *device, u32 event) @@ -893,7 +901,7 @@ static int eeepc_hotk_resume(struct acpi_device *device) rfkill_set_sw_state(ehotk->wlan_rfkill, wlan != 1); - schedule_work(&ehotk->hotplug_work); + eeepc_rfkill_hotplug(); } if (ehotk->bluetooth_rfkill) @@ -1094,7 +1102,7 @@ static int eeepc_rfkill_init(struct device *dev) { int result = 0; - INIT_WORK(&ehotk->hotplug_work, eeepc_hotplug_work); + mutex_init(&ehotk->hotplug_lock); eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P6"); eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P7");