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-rw-r--r--drivers/platform/x86/eeepc-laptop.c8
-rw-r--r--drivers/platform/x86/thinkpad_acpi.c14
-rw-r--r--include/linux/rfkill.h32
-rw-r--r--net/rfkill/core.c40
4 files changed, 63 insertions, 31 deletions
diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c
index 03bf522bd7ab..01682eca4360 100644
--- a/drivers/platform/x86/eeepc-laptop.c
+++ b/drivers/platform/x86/eeepc-laptop.c
@@ -675,8 +675,8 @@ static int eeepc_hotk_add(struct acpi_device *device)
if (!ehotk->eeepc_wlan_rfkill)
goto wlan_fail;
- rfkill_set_sw_state(ehotk->eeepc_wlan_rfkill,
- get_acpi(CM_ASL_WLAN) != 1);
+ rfkill_init_sw_state(ehotk->eeepc_wlan_rfkill,
+ get_acpi(CM_ASL_WLAN) != 1);
result = rfkill_register(ehotk->eeepc_wlan_rfkill);
if (result)
goto wlan_fail;
@@ -693,8 +693,8 @@ static int eeepc_hotk_add(struct acpi_device *device)
if (!ehotk->eeepc_bluetooth_rfkill)
goto bluetooth_fail;
- rfkill_set_sw_state(ehotk->eeepc_bluetooth_rfkill,
- get_acpi(CM_ASL_BLUETOOTH) != 1);
+ rfkill_init_sw_state(ehotk->eeepc_bluetooth_rfkill,
+ get_acpi(CM_ASL_BLUETOOTH) != 1);
result = rfkill_register(ehotk->eeepc_bluetooth_rfkill);
if (result)
goto bluetooth_fail;
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 86e958539f46..40d64c03278c 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -1163,8 +1163,8 @@ static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
{
struct tpacpi_rfk *atp_rfk;
int res;
- bool initial_sw_state = false;
- int initial_sw_status;
+ bool sw_state = false;
+ int sw_status;
BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]);
@@ -1185,17 +1185,17 @@ static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
atp_rfk->id = id;
atp_rfk->ops = tp_rfkops;
- initial_sw_status = (tp_rfkops->get_status)();
- if (initial_sw_status < 0) {
+ sw_status = (tp_rfkops->get_status)();
+ if (sw_status < 0) {
printk(TPACPI_ERR
"failed to read initial state for %s, error %d\n",
- name, initial_sw_status);
+ name, sw_status);
} else {
- initial_sw_state = (initial_sw_status == TPACPI_RFK_RADIO_OFF);
+ sw_state = (sw_status == TPACPI_RFK_RADIO_OFF);
if (set_default) {
/* try to keep the initial state, since we ask the
* firmware to preserve it across S5 in NVRAM */
- rfkill_set_sw_state(atp_rfk->rfkill, initial_sw_state);
+ rfkill_init_sw_state(atp_rfk->rfkill, sw_state);
}
}
rfkill_set_hw_state(atp_rfk->rfkill, tpacpi_rfk_check_hwblock_state());
diff --git a/include/linux/rfkill.h b/include/linux/rfkill.h
index 16e39c7a67fc..dcac724340d8 100644
--- a/include/linux/rfkill.h
+++ b/include/linux/rfkill.h
@@ -160,8 +160,9 @@ struct rfkill * __must_check rfkill_alloc(const char *name,
* the rfkill structure. Before calling this function the driver needs
* to be ready to service method calls from rfkill.
*
- * If the software blocked state is not set before registration,
- * set_block will be called to initialize it to a default value.
+ * If rfkill_init_sw_state() is not called before registration,
+ * set_block() will be called to initialize the software blocked state
+ * to a default value.
*
* If the hardware blocked state is not set before registration,
* it is assumed to be unblocked.
@@ -234,9 +235,11 @@ bool __must_check rfkill_set_hw_state(struct rfkill *rfkill, bool blocked);
* rfkill drivers that get events when the soft-blocked state changes
* (yes, some platforms directly act on input but allow changing again)
* use this function to notify the rfkill core (and through that also
- * userspace) of the current state. It is not necessary to notify on
- * resume; since hibernation can always change the soft-blocked state,
- * the rfkill core will unconditionally restore the previous state.
+ * userspace) of the current state.
+ *
+ * Drivers should also call this function after resume if the state has
+ * been changed by the user. This only makes sense for "persistent"
+ * devices (see rfkill_init_sw_state()).
*
* This function can be called in any context, even from within rfkill
* callbacks.
@@ -247,6 +250,21 @@ bool __must_check rfkill_set_hw_state(struct rfkill *rfkill, bool blocked);
bool rfkill_set_sw_state(struct rfkill *rfkill, bool blocked);
/**
+ * rfkill_init_sw_state - Initialize persistent software block state
+ * @rfkill: pointer to the rfkill class to modify.
+ * @state: the current software block state to set
+ *
+ * rfkill drivers that preserve their software block state over power off
+ * use this function to notify the rfkill core (and through that also
+ * userspace) of their initial state. It should only be used before
+ * registration.
+ *
+ * In addition, it marks the device as "persistent". Persistent devices
+ * are expected to preserve preserve their own state when suspended.
+ */
+void rfkill_init_sw_state(struct rfkill *rfkill, bool blocked);
+
+/**
* rfkill_set_states - Set the internal rfkill block states
* @rfkill: pointer to the rfkill class to modify.
* @sw: the current software block state to set
@@ -307,6 +325,10 @@ static inline bool rfkill_set_sw_state(struct rfkill *rfkill, bool blocked)
return blocked;
}
+static inline void rfkill_init_sw_state(struct rfkill *rfkill, bool blocked)
+{
+}
+
static inline void rfkill_set_states(struct rfkill *rfkill, bool sw, bool hw)
{
}
diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index 868d79f8ac1d..dcf8df7c573c 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c
@@ -56,7 +56,6 @@ struct rfkill {
u32 idx;
bool registered;
- bool suspended;
bool persistent;
const struct rfkill_ops *ops;
@@ -224,7 +223,7 @@ static void rfkill_send_events(struct rfkill *rfkill, enum rfkill_operation op)
static void rfkill_event(struct rfkill *rfkill)
{
- if (!rfkill->registered || rfkill->suspended)
+ if (!rfkill->registered)
return;
kobject_uevent(&rfkill->dev.kobj, KOBJ_CHANGE);
@@ -508,19 +507,32 @@ bool rfkill_set_sw_state(struct rfkill *rfkill, bool blocked)
blocked = blocked || hwblock;
spin_unlock_irqrestore(&rfkill->lock, flags);
- if (!rfkill->registered) {
- rfkill->persistent = true;
- } else {
- if (prev != blocked && !hwblock)
- schedule_work(&rfkill->uevent_work);
+ if (!rfkill->registered)
+ return blocked;
- rfkill_led_trigger_event(rfkill);
- }
+ if (prev != blocked && !hwblock)
+ schedule_work(&rfkill->uevent_work);
+
+ rfkill_led_trigger_event(rfkill);
return blocked;
}
EXPORT_SYMBOL(rfkill_set_sw_state);
+void rfkill_init_sw_state(struct rfkill *rfkill, bool blocked)
+{
+ unsigned long flags;
+
+ BUG_ON(!rfkill);
+ BUG_ON(rfkill->registered);
+
+ spin_lock_irqsave(&rfkill->lock, flags);
+ __rfkill_set_sw_state(rfkill, blocked);
+ rfkill->persistent = true;
+ spin_unlock_irqrestore(&rfkill->lock, flags);
+}
+EXPORT_SYMBOL(rfkill_init_sw_state);
+
void rfkill_set_states(struct rfkill *rfkill, bool sw, bool hw)
{
unsigned long flags;
@@ -718,8 +730,6 @@ static int rfkill_suspend(struct device *dev, pm_message_t state)
rfkill_pause_polling(rfkill);
- rfkill->suspended = true;
-
return 0;
}
@@ -728,10 +738,10 @@ static int rfkill_resume(struct device *dev)
struct rfkill *rfkill = to_rfkill(dev);
bool cur;
- cur = !!(rfkill->state & RFKILL_BLOCK_SW);
- rfkill_set_block(rfkill, cur);
-
- rfkill->suspended = false;
+ if (!rfkill->persistent) {
+ cur = !!(rfkill->state & RFKILL_BLOCK_SW);
+ rfkill_set_block(rfkill, cur);
+ }
rfkill_resume_polling(rfkill);

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