1 files changed, 79 insertions, 50 deletions

diff --git a/drivers/net/wireless/b43/rfkill.c b/drivers/net/wireless/b43/rfkill.c
index c25fd9956a9c..800e0a61a7f5 100644
--- a/drivers/net/wireless/b43/rfkill.c
+++ b/drivers/net/wireless/b43/rfkill.c
@@ -26,46 +26,39 @@
 #include "b43.h"
 
 
-static void b43_notify_rfkill_press(struct work_struct *work)
+/* Returns TRUE, if the radio is enabled in hardware. */
+static bool b43_is_hw_radio_enabled(struct b43_wldev *dev)
 {
-	struct b43_rfkill *rfk = container_of(work, struct b43_rfkill,
-					      notify_work);
-	struct b43_wl *wl = container_of(rfk, struct b43_wl, rfkill);
-	struct b43_wldev *dev;
-	enum rfkill_state state;
-
-	mutex_lock(&wl->mutex);
-	dev = wl->current_dev;
-	if (b43_status(dev) < B43_STAT_INITIALIZED) {
-		mutex_unlock(&wl->mutex);
-		return;
-	}
-	if (dev->radio_hw_enable)
-		state = RFKILL_STATE_ON;
-	else
-		state = RFKILL_STATE_OFF;
-	b43info(wl, "Radio hardware status changed to %s\n",
-		dev->radio_hw_enable ? "ENABLED" : "DISABLED");
-	mutex_unlock(&wl->mutex);
-
-	if (rfk->rfkill) {
-		/* Be careful. This calls back into the software toggle routines.
-		 * So we must unlock before calling. */
-		rfkill_switch_all(rfk->rfkill->type, state);
+	if (dev->phy.rev >= 3) {
+		if (!(b43_read32(dev, B43_MMIO_RADIO_HWENABLED_HI)
+		      & B43_MMIO_RADIO_HWENABLED_HI_MASK))
+			return 1;
+	} else {
+		if (b43_read16(dev, B43_MMIO_RADIO_HWENABLED_LO)
+		    & B43_MMIO_RADIO_HWENABLED_LO_MASK)
+			return 1;
 	}
+	return 0;
 }
 
-/* Called when the RFKILL toggled in hardware.
- * This is called with the mutex locked. */
-void b43_rfkill_toggled(struct b43_wldev *dev, bool on)
+/* The poll callback for the hardware button. */
+static void b43_rfkill_poll(struct input_polled_dev *poll_dev)
 {
+	struct b43_wldev *dev = poll_dev->private;
 	struct b43_wl *wl = dev->wl;
+	bool enabled;
 
+	mutex_lock(&wl->mutex);
 	B43_WARN_ON(b43_status(dev) < B43_STAT_INITIALIZED);
-	/* Update the RF status asynchronously, as rfkill will
-	 * call back into the software toggle handler.
-	 * This would deadlock if done synchronously. */
-	queue_work(wl->hw->workqueue, &wl->rfkill.notify_work);
+	enabled = b43_is_hw_radio_enabled(dev);
+	if (unlikely(enabled != dev->radio_hw_enable)) {
+		dev->radio_hw_enable = enabled;
+		b43info(wl, "Radio hardware status changed to %s\n",
+			enabled ? "ENABLED" : "DISABLED");
+		mutex_unlock(&wl->mutex);
+		input_report_key(poll_dev->input, KEY_WLAN, enabled);
+	} else
+		mutex_unlock(&wl->mutex);
 }
 
 /* Called when the RFKILL toggled in software.
@@ -118,38 +111,74 @@ void b43_rfkill_init(struct b43_wldev *dev)
 	struct b43_rfkill *rfk = &(wl->rfkill);
 	int err;
 
+	if (rfk->rfkill) {
+		err = rfkill_register(rfk->rfkill);
+		if (err) {
+			b43warn(wl, "Failed to register RF-kill button\n");
+			goto err_free_rfk;
+		}
+	}
+	if (rfk->poll_dev) {
+		err = input_register_polled_device(rfk->poll_dev);
+		if (err) {
+			b43warn(wl, "Failed to register RF-kill polldev\n");
+			goto err_free_polldev;
+		}
+	}
+
+	return;
+err_free_rfk:
+	rfkill_free(rfk->rfkill);
+	rfk->rfkill = NULL;
+err_free_polldev:
+	input_free_polled_device(rfk->poll_dev);
+	rfk->poll_dev = NULL;
+}
+
+void b43_rfkill_exit(struct b43_wldev *dev)
+{
+	struct b43_rfkill *rfk = &(dev->wl->rfkill);
+
+	if (rfk->poll_dev)
+		input_unregister_polled_device(rfk->poll_dev);
+	if (rfk->rfkill)
+		rfkill_unregister(rfk->rfkill);
+}
+
+void b43_rfkill_alloc(struct b43_wldev *dev)
+{
+	struct b43_wl *wl = dev->wl;
+	struct b43_rfkill *rfk = &(wl->rfkill);
+
 	snprintf(rfk->name, sizeof(rfk->name),
 		 "b43-%s", wiphy_name(wl->hw->wiphy));
+
 	rfk->rfkill = rfkill_allocate(dev->dev->dev, RFKILL_TYPE_WLAN);
-	if (!rfk->rfkill)
-		goto error;
+	if (!rfk->rfkill) {
+		b43warn(wl, "Failed to allocate RF-kill button\n");
+		return;
+	}
 	rfk->rfkill->name = rfk->name;
 	rfk->rfkill->state = RFKILL_STATE_ON;
 	rfk->rfkill->data = dev;
 	rfk->rfkill->toggle_radio = b43_rfkill_soft_toggle;
 	rfk->rfkill->user_claim_unsupported = 1;
 
-	INIT_WORK(&rfk->notify_work, b43_notify_rfkill_press);
-
-	err = rfkill_register(rfk->rfkill);
-	if (err)
-		goto error;
-
-	return;
-error:
-	b43warn(dev->wl, "Failed to initialize the RF-kill button\n");
-	rfkill_free(rfk->rfkill);
-	rfk->rfkill = NULL;
+	rfk->poll_dev = input_allocate_polled_device();
+	if (rfk->poll_dev) {
+		rfk->poll_dev->private = dev;
+		rfk->poll_dev->poll = b43_rfkill_poll;
+		rfk->poll_dev->poll_interval = 1000; /* msecs */
+	} else
+		b43warn(wl, "Failed to allocate RF-kill polldev\n");
 }
 
-void b43_rfkill_exit(struct b43_wldev *dev)
+void b43_rfkill_free(struct b43_wldev *dev)
 {
 	struct b43_rfkill *rfk = &(dev->wl->rfkill);
 
-	if (!rfk->rfkill)
-		return;
-	cancel_work_sync(&rfk->notify_work);
-	rfkill_unregister(rfk->rfkill);
+	input_free_polled_device(rfk->poll_dev);
+	rfk->poll_dev = NULL;
 	rfkill_free(rfk->rfkill);
 	rfk->rfkill = NULL;
 }