The assertion of the lock-bit in the hardware register is unreliable,
because there are devices with quirks that will randomly set the bit.
Do the assertion in software, only.
Signed-off-by: Michael Buesch <mb@xxxxxxxxx>
---
John, please queue this bugfix.
Index: wireless-testing/drivers/net/wireless/b43/phy_common.c
===================================================================
--- wireless-testing.orig/drivers/net/wireless/b43/phy_common.c 2009-03-31 12:03:22.000000000 +0200
+++ wireless-testing/drivers/net/wireless/b43/phy_common.c 2009-03-31 12:08:00.000000000 +0200
@@ -131,12 +131,16 @@ void b43_radio_lock(struct b43_wldev *de
{
u32 macctl;
+#if B43_DEBUG
+ B43_WARN_ON(dev->phy.radio_locked);
+ dev->phy.radio_locked = 1;
+#endif
+
macctl = b43_read32(dev, B43_MMIO_MACCTL);
- B43_WARN_ON(macctl & B43_MACCTL_RADIOLOCK);
macctl |= B43_MACCTL_RADIOLOCK;
b43_write32(dev, B43_MMIO_MACCTL, macctl);
- /* Commit the write and wait for the device
- * to exit any radio register access. */
+ /* Commit the write and wait for the firmware
+ * to finish any radio register access. */
b43_read32(dev, B43_MMIO_MACCTL);
udelay(10);
}
@@ -145,11 +149,15 @@ void b43_radio_unlock(struct b43_wldev *
{
u32 macctl;
+#if B43_DEBUG
+ B43_WARN_ON(!dev->phy.radio_locked);
+ dev->phy.radio_locked = 0;
+#endif
+
/* Commit any write */
b43_read16(dev, B43_MMIO_PHY_VER);
/* unlock */
macctl = b43_read32(dev, B43_MMIO_MACCTL);
- B43_WARN_ON(!(macctl & B43_MACCTL_RADIOLOCK));
macctl &= ~B43_MACCTL_RADIOLOCK;
b43_write32(dev, B43_MMIO_MACCTL, macctl);
}
Index: wireless-testing/drivers/net/wireless/b43/phy_common.h
===================================================================
--- wireless-testing.orig/drivers/net/wireless/b43/phy_common.h 2009-03-31 12:02:58.000000000 +0200
+++ wireless-testing/drivers/net/wireless/b43/phy_common.h 2009-03-31 12:05:54.000000000 +0200
@@ -245,8 +245,10 @@ struct b43_phy {
atomic_t txerr_cnt;
#ifdef CONFIG_B43_DEBUG
- /* PHY registers locked by b43_phy_lock()? */
+ /* PHY registers locked (w.r.t. firmware) */
bool phy_locked;
+ /* Radio registers locked (w.r.t. firmware) */
+ bool radio_locked;
#endif /* B43_DEBUG */
};
Index: wireless-testing/drivers/net/wireless/b43/main.c
===================================================================
--- wireless-testing.orig/drivers/net/wireless/b43/main.c 2009-03-31 12:12:53.000000000 +0200
+++ wireless-testing/drivers/net/wireless/b43/main.c 2009-03-31 12:14:45.000000000 +0200
@@ -3980,6 +3980,11 @@ static void setup_struct_phy_for_init(st
phy->next_txpwr_check_time = jiffies;
/* PHY TX errors counter. */
atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
+
+#if B43_DEBUG
+ phy->phy_locked = 0;
+ phy->radio_locked = 0;
+#endif
}
static void setup_struct_wldev_for_init(struct b43_wldev *dev)
--
Greetings, Michael.
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