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b43: Fix rfkill radio LED

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This fixes Bug #9414

Since addition of the rfkill callback, the LED associated with the off
switch on the radio has not worked for several reasons:

(1) Essential data in the rfkill structure were missing.
(2) The rfkill structure was initialized after the LED initialization.
(3) There was a minor memory leak if the radio LED structure was inited.

Once the above problems were fixed, additional difficulties were noted:

(4) The radio LED was in the wrong state at startup.
(5) The radio switch had to be manipulated twice for each state change.
(6) A circular mutex locking situation existed.
(7) If rfkill-input is built as a module, it is not automatically loaded.

This patch fixes all of the above.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Larry Finger
2007-12-14 13:59:11 +01:00
committed by John W. Linville
parent cb935cb4bd
commit 1a8d122782
3 changed files with 47 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
drivers/net/wireless/b43/main.c
View File

@@ -2163,7 +2163,6 @@ static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
static void b43_chip_exit(struct b43_wldev *dev)
{
b43_radio_turn_off(dev, 1);
b43_leds_exit(dev);
b43_gpio_cleanup(dev);
/* firmware is released later */
}
@@ -2191,11 +2190,10 @@ static int b43_chip_init(struct b43_wldev *dev)
err = b43_gpio_init(dev);
if (err)
goto out; /* firmware is released later */
b43_leds_init(dev);
err = b43_upload_initvals(dev);
if (err)
goto err_leds_exit;
goto err_gpio_clean;
b43_radio_turn_on(dev);
b43_write16(dev, 0x03E6, 0x0000);
@@ -2271,8 +2269,7 @@ out:
err_radio_off:
b43_radio_turn_off(dev, 1);
err_leds_exit:
b43_leds_exit(dev);
err_gpio_clean:
b43_gpio_cleanup(dev);
return err;
}
@@ -3273,10 +3270,7 @@ static void b43_wireless_core_exit(struct b43_wldev *dev)
return;
b43_set_status(dev, B43_STAT_UNINIT);
mutex_unlock(&dev->wl->mutex);
b43_rfkill_exit(dev);
mutex_lock(&dev->wl->mutex);
b43_leds_exit(dev);
b43_rng_exit(dev->wl);
b43_pio_free(dev);
b43_dma_free(dev);
@@ -3405,12 +3399,12 @@ static int b43_wireless_core_init(struct b43_wldev *dev)
memset(wl->mac_addr, 0, ETH_ALEN);
b43_upload_card_macaddress(dev);
b43_security_init(dev);
b43_rfkill_init(dev);
b43_rng_init(wl);
b43_set_status(dev, B43_STAT_INITIALIZED);
out:
b43_leds_init(dev);
out:
return err;
err_chip_exit:
@@ -3499,6 +3493,10 @@ static int b43_start(struct ieee80211_hw *hw)
int did_init = 0;
int err = 0;
/* First register RFkill.
* LEDs that are registered later depend on it. */
b43_rfkill_init(dev);
mutex_lock(&wl->mutex);
if (b43_status(dev) < B43_STAT_INITIALIZED) {
@@ -3528,6 +3526,8 @@ static void b43_stop(struct ieee80211_hw *hw)
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
b43_rfkill_exit(dev);
mutex_lock(&wl->mutex);
if (b43_status(dev) >= B43_STAT_STARTED)
b43_wireless_core_stop(dev);