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linux/arch/xtensa/platforms
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Max Filippov bd1f6829e6 xtensa: ISS: fix locking in TAP network adapter 
commit 24e94454c8 upstream.

- don't lock lp->lock in the iss_net_timer for the call of iss_net_poll,
  it will lock it itself;
- invert order of lp->lock and opened_lock acquisition in the
  iss_net_open to make it consistent with iss_net_poll;
- replace spin_lock with spin_lock_bh when acquiring locks used in
  iss_net_timer from non-atomic context;
- replace spin_lock_irqsave with spin_lock_bh in the iss_net_start_xmit
  as the driver doesn't use lp->lock in the hard IRQ context;
- replace __SPIN_LOCK_UNLOCKED(lp.lock) with spin_lock_init, otherwise
  lockdep is unhappy about using non-static key.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
History 2015-05-06 10:24:17 +01:00
..
iss xtensa: ISS: fix locking in TAP network adapter 2015-05-06 10:24:17 +01:00
s6105 xtensa: Convert genirq namespace 2011-03-24 20:35:58 +01:00
xt2000 xtensa: xt2000: drop redundant sysmem initialization 2014-04-10 00:19:03 -07:00
xtfpga xtensa: xtfpga: fix hardware lockup caused by LCD driver 2015-05-04 16:06:36 +01:00