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