b43: Use a threaded IRQ handler

Use a threaded IRQ handler to allow locking the mutex and
sleeping while executing an interrupt.
This removes usage of the irq_lock spinlock, but introduces
a new hardirq_lock, which is _only_ used for the PCI/SSB lowlevel
hard-irq handler. Sleeping busses (SDIO) will use mutex instead.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Tested-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 0 insertions, 7 deletions

diff --git a/drivers/net/wireless/b43/phy_g.c b/drivers/net/wireless/b43/phy_g.c
index 5afa4df0b02f..382826a8da82 100644
--- a/drivers/net/wireless/b43/phy_g.c
+++ b/drivers/net/wireless/b43/phy_g.c
@@ -2823,8 +2823,6 @@ static void b43_gphy_op_adjust_txpower(struct b43_wldev *dev)
 
         b43_mac_suspend(dev);
 
-        spin_lock_irq(&dev->wl->irq_lock);
-
         /* Calculate the new attenuation values. */
         bbatt = gphy->bbatt.att;
         bbatt += gphy->bbatt_delta;
@@ -2864,11 +2862,6 @@ static void b43_gphy_op_adjust_txpower(struct b43_wldev *dev)
         gphy->rfatt.att = rfatt;
         gphy->bbatt.att = bbatt;
 
-        /* We drop the lock early, so we can sleep during hardware
-         * adjustment. Possible races with op_recalc_txpower are harmless,
-         * as we will be called once again in case we raced. */
-        spin_unlock_irq(&dev->wl->irq_lock);
-
         if (b43_debug(dev, B43_DBG_XMITPOWER))
                 b43dbg(dev->wl, "Adjusting TX power\n");