target/linux/brcm2708/patches-3.10/0125-clockevents-Add-module-refcount.patch

   1 From 38ca21f81217c14749f190f44709d4f5606ff798 Mon Sep 17 00:00:00 2001
   2 From: Thomas Gleixner <tglx@linutronix.de>
   3 Date: Thu, 25 Apr 2013 20:31:49 +0000
   4 Subject: [PATCH 125/174] clockevents: Add module refcount
   5
   6 commit ccf33d6880f39a35158fff66db13000ae4943fac upstream.
   7
   8 We want to be able to remove clockevent modules as well. Add a
   9 refcount so we don't remove a module with an active clock event
  10 device.
  11
  12 Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
  13 Cc: John Stultz <john.stultz@linaro.org>
  14 Cc: Magnus Damm <magnus.damm@gmail.com>
  15 Link: http://lkml.kernel.org/r/20130425143436.307435149@linutronix.de
  16 Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
  17 Cc: Kim Phillips <kim.phillips@linaro.org>
  18 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  19 ---
  20  kernel/time/tick-broadcast.c | 2 ++
  21  kernel/time/tick-common.c    | 3 +++
  22  2 files changed, 5 insertions(+)
  23
  24 --- a/kernel/time/tick-broadcast.c
  25 +++ b/kernel/time/tick-broadcast.c
  26 @@ -92,6 +92,8 @@ void tick_install_broadcast_device(struc
  27
  28         if (!try_module_get(dev->owner))
  29                 return;
  30 +       if (!try_module_get(dev->owner))
  31 +               return;
  32
  33         clockevents_exchange_device(cur, dev);
  34         if (cur)
  35 --- a/kernel/time/tick-common.c
  36 +++ b/kernel/time/tick-common.c
  37 @@ -273,6 +273,9 @@ void tick_check_new_device(struct clock_
  38         if (!try_module_get(newdev->owner))
  39                 return;
  40
  41 +       if (!try_module_get(newdev->owner))
  42 +               return;
  43 +
  44         /*
  45          * Replace the eventually existing device by the new
  46          * device. If the current device is the broadcast device, do