package/linux-fusion/0003-Fix-fusion-Unknown-symbol-tasklist_lock-err-0.patch

   1 From 9fcd5003c0363af140a06aba94e62c9e1ea0381e Mon Sep 17 00:00:00 2001
   2 From: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
   3 Date: Mon, 11 Jan 2016 16:45:30 +0100
   4 Subject: [PATCH] Fix fusion: Unknown symbol tasklist_lock (err 0)
   5
   6 Commit 28f6569ab7d0 renamed TREE_PREEMPT_RCU to PREEMPT_RCU in 3.19
   7 As a result, the code incorrectly falls back to using tasklist_lock
   8 (which was made private in 2.6.18)
   9
  10 Always use rcu_read_lock on modern kernels.
  11
  12 Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
  13 ---
  14  linux/drivers/char/fusion/fusionee.c | 4 ++--
  15  1 file changed, 2 insertions(+), 2 deletions(-)
  16
  17 diff --git a/linux/drivers/char/fusion/fusionee.c b/linux/drivers/char/fusion/fusionee.c
  18 index ef067f5bc831..70cd0a665f98 100644
  19 --- a/linux/drivers/char/fusion/fusionee.c
  20 +++ b/linux/drivers/char/fusion/fusionee.c
  21 @@ -925,7 +925,7 @@ fusionee_kill(FusionDev * dev,
  22                 if (f != fusionee && (!target || target == f->id)) {
  23                      struct task_struct *p;
  24
  25 -#if defined(CONFIG_TREE_RCU) || defined(CONFIG_TREE_PREEMPT_RCU) || defined(CONFIG_TINY_RCU) || defined(rcu_read_lock)
  26 +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
  27                      rcu_read_lock();
  28  #else
  29                      read_lock(&tasklist_lock);
  30 @@ -946,7 +946,7 @@ fusionee_kill(FusionDev * dev,
  31                           }
  32                      }
  33
  34 -#if defined(CONFIG_TREE_RCU) || defined(CONFIG_TREE_PREEMPT_RCU) || defined(CONFIG_TINY_RCU) || defined(rcu_read_unlock)
  35 +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
  36                      rcu_read_unlock();
  37  #else
  38                      read_unlock(&tasklist_lock);