Remove all irqs_disabled() sanity checks, as they are not safe on
a RT-enabled kernel and will trigger bogus warnings.
Signed-off-by: NMichael Buesch <mb@bu3sch.de>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This fixes a sparse warning about weird locking.
The spinlock is not needed, so simply remove it.
This also adds some sanity checks to the PHY and radio locking
to protect against recursive locking.
Signed-off-by: NMichael Buesch <mb@bu3sch.de>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Remove b43 PIO support.
DMA works well on all supported devices. There's no reason to use PIO.
Additionally, new devices don't support PIO in hardware anymore.
b43 PIO support is dead and unused code.

After applying this patch please do
git rm drivers/net/wireless/b43/pio.h
git rm drivers/net/wireless/b43/pio.c
to remove the main PIO support code.
Signed-off-by: NMichael Buesch <mb@bu3sch.de>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

use uninitialized_var() to avoid the following bogus warning:
  CC [M]  drivers/net/wireless/b43/debugfs.o
drivers/net/wireless/b43/debugfs.c: In function ‘b43_debugfs_read’:
drivers/net/wireless/b43/debugfs.c:355: warning: ‘ret’ may be used uninitialized in this function
Signed-off-by: NMichael Buesch <mb@bu3sch.de>
Signed-off-by: NFrank Lichtenheld <frank@lichtenheld.de>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Fix possible buffer overrun.
Signed-off-by: NMichael Buesch <mb@bu3sch.de>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

It's not required and the txpower adjustment must not be in atomic.
Signed-off-by: NMichael Buesch <mb@bu3sch.de>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The remaining warning in phy.c will be fixed later.
Signed-off-by: NMichael Buesch <mb@bu3sch.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NMichael Buesch <mb@bu3sch.de>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>